857161934 has 8 divisors (see below), whose sum is σ = 1353413640. Its totient is φ = 406024056.

The previous prime is 857161933. The next prime is 857161979. The reversal of 857161934 is 439161758.

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

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, 11278409 + ... + 11278484.

It is an arithmetic number, because the mean of its divisors is an integer number (169176705).

Almost surely, 2^857161934 is an apocalyptic number.

857161934 is a deficient number, since it is larger than the sum of its proper divisors (496251706).

857161934 is a wasteful number, since it uses less digits than its factorization.

857161934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22556914.

The product of its digits is 181440, while the sum is 44.

The square root of 857161934 is about 29277.3279860031. The cubic root of 857161934 is about 949.9212987435.

The spelling of 857161934 in words is "eight hundred fifty-seven million, one hundred sixty-one thousand, nine hundred thirty-four".