8157857082 has 32 divisors (see below), whose sum is σ = 17558679744. Its totient is φ = 2517369600.

The previous prime is 8157857053. The next prime is 8157857083. The reversal of 8157857082 is 2807587518.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (8157857083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649344 + ... + 661787.

It is an arithmetic number, because the mean of its divisors is an integer number (548708742).

Almost surely, 2^8157857082 is an apocalyptic number.

8157857082 is an abundant number, since it is smaller than the sum of its proper divisors (9400822662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8157857082 is a wasteful number, since it uses less digits than its factorization.

8157857082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311214.

The product of its (nonzero) digits is 1254400, while the sum is 51.

The square root of 8157857082 is about 90320.8562957637. The cubic root of 8157857082 is about 2013.0691692200.

The spelling of 8157857082 in words is "eight billion, one hundred fifty-seven million, eight hundred fifty-seven thousand, eighty-two".