857538903 has 32 divisors (see below), whose sum is σ = 1304936640. Its totient is φ = 497064960.

The previous prime is 857538883. The next prime is 857538919. The reversal of 857538903 is 309835758.

It is a happy number.

It is not a de Polignac number, because 857538903 - 2¹² = 857534807 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857538203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37125 + ... + 55617.

It is an arithmetic number, because the mean of its divisors is an integer number (40779270).

Almost surely, 2^857538903 is an apocalyptic number.

857538903 is a deficient number, since it is larger than the sum of its proper divisors (447397737).

857538903 is a wasteful number, since it uses less digits than its factorization.

857538903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18579.

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 857538903 is about 29283.7651779958. The cubic root of 857538903 is about 950.0605328003.

The spelling of 857538903 in words is "eight hundred fifty-seven million, five hundred thirty-eight thousand, nine hundred three".