857161936 has 20 divisors (see below), whose sum is σ = 1696087872. Its totient is φ = 419461856.

The previous prime is 857161933. The next prime is 857161979. The reversal of 857161936 is 639161758.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857161933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569170 + ... + 570673.

Almost surely, 2^857161936 is an apocalyptic number.

It is an amenable number.

857161936 is a deficient number, since it is larger than the sum of its proper divisors (838925936).

857161936 is a wasteful number, since it uses less digits than its factorization.

857161936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139898 (or 1139892 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 857161936 is about 29277.3280201592. The cubic root of 857161936 is about 949.9212994823.

It can be divided in two parts, 8571 and 61936, that added together give a palindrome (70507).

The spelling of 857161936 in words is "eight hundred fifty-seven million, one hundred sixty-one thousand, nine hundred thirty-six".