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4907090681 = 17389742037
BaseRepresentation
bin1001001000111110…
…00100001011111001
3110122222120000221022
410210133010023321
540022203400211
62130531552225
7232413403553
oct44437041371
913588500838
104907090681
112098a19949
12b4b45b675
1360282b66c
143479d84d3
151dac02bdb
hex1247c42f9

4907090681 has 8 divisors (see below), whose sum is σ = 5209106760. Its totient is φ = 4606559488.

The previous prime is 4907090677. The next prime is 4907090707. The reversal of 4907090681 is 1860907094.

It can be written as a sum of positive squares in 4 ways, for example, as 101828281 + 4805262400 = 10091^2 + 69320^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4907090681 - 22 = 4907090677 is a prime.

It is a super-2 number, since 2×49070906812 = 48159077903114087522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4907095681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364406 + ... + 377631.

It is an arithmetic number, because the mean of its divisors is an integer number (651138345).

Almost surely, 24907090681 is an apocalyptic number.

It is an amenable number.

4907090681 is a deficient number, since it is larger than the sum of its proper divisors (302016079).

4907090681 is a wasteful number, since it uses less digits than its factorization.

4907090681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742443.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 4907090681 is about 70050.6294118761. The cubic root of 4907090681 is about 1699.3181441970.

The spelling of 4907090681 in words is "four billion, nine hundred seven million, ninety thousand, six hundred eighty-one".

Divisors: 1 17 389 6613 742037 12614629 288652393 4907090681