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5181708948 = 2231346371741
BaseRepresentation
bin1001101001101101…
…01001101010010100
3111101010022002101020
410310312221222110
541103004141243
62214102001140
7242256541113
oct46466515224
914333262336
105181708948
112219a37699
1210074161b0
136476b0590
14372281c7a
15204d9b283
hex134da9a94

5181708948 has 48 divisors (see below), whose sum is σ = 13049008896. Its totient is φ = 1590906240.

The previous prime is 5181708943. The next prime is 5181708977. The reversal of 5181708948 is 8498071815.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5181708948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181708943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36358 + ... + 108098.

It is an arithmetic number, because the mean of its divisors is an integer number (271854352).

Almost surely, 25181708948 is an apocalyptic number.

It is an amenable number.

5181708948 is an abundant number, since it is smaller than the sum of its proper divisors (7867299948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5181708948 is a wasteful number, since it uses less digits than its factorization.

5181708948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72224 (or 72222 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 51.

The square root of 5181708948 is about 71984.0881584257. The cubic root of 5181708948 is about 1730.4444877908. Note that the first 4 decimals are identical.

The spelling of 5181708948 in words is "five billion, one hundred eighty-one million, seven hundred eight thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 463 926 1389 1852 2778 5556 6019 12038 18057 24076 36114 71741 72228 143482 215223 286964 430446 860892 932633 1865266 2797899 3730532 5595798 11191596 33216083 66432166 99648249 132864332 199296498 398592996 431809079 863618158 1295427237 1727236316 2590854474 5181708948