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4895819957 = 72895691973
BaseRepresentation
bin1001000111101000…
…00100100010110101
3110122012100102102002
410203310010202311
540011312214312
62125450225045
7232215532400
oct44364044265
913565312362
104895819957
112092620aa6
12b47725185
136003b35b2
14346302d37
151d9c284c2
hex123d048b5

4895819957 has 24 divisors (see below), whose sum is σ = 5772173400. Its totient is φ = 4139874816.

The previous prime is 4895819939. The next prime is 4895819969. The reversal of 4895819957 is 7599185984.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57365476 + 4838454481 = 7574^2 + 69559^2 .

It is not a de Polignac number, because 4895819957 - 214 = 4895803573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4895819893 and 4895819902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4895819977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2480423 + ... + 2482395.

It is an arithmetic number, because the mean of its divisors is an integer number (240507225).

Almost surely, 24895819957 is an apocalyptic number.

It is an amenable number.

4895819957 is a deficient number, since it is larger than the sum of its proper divisors (876353443).

4895819957 is a wasteful number, since it uses less digits than its factorization.

4895819957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645 (or 2638 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 65.

The square root of 4895819957 is about 69970.1361796588. The cubic root of 4895819957 is about 1698.0161352525.

The spelling of 4895819957 in words is "four billion, eight hundred ninety-five million, eight hundred nineteen thousand, nine hundred fifty-seven".

Divisors: 1 7 49 89 569 623 1973 3983 4361 13811 27881 50641 96677 175597 354487 1122637 1229179 2481409 7858459 8604253 55009213 99914693 699402851 4895819957