8157874864 has 40 divisors (see below), whose sum is σ = 16741941840. Its totient is φ = 3837554688.

The previous prime is 8157874861. The next prime is 8157874871. The reversal of 8157874864 is 4684787518.

It is a junction number, because it is equal to n+sod(n) for n = 8157874799 and 8157874808.

It is not an unprimeable number, because it can be changed into a prime (8157874861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158747 + ... + 1165765.

It is an arithmetic number, because the mean of its divisors is an integer number (418548546).

Almost surely, 2^8157874864 is an apocalyptic number.

It is an amenable number.

8157874864 is an abundant number, since it is smaller than the sum of its proper divisors (8584066976).

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

8157874864 is a wasteful number, since it uses less digits than its factorization.

8157874864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11317 (or 11311 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 58.

The square root of 8157874864 is about 90320.9547336608. The cubic root of 8157874864 is about 2013.0706318741.

The spelling of 8157874864 in words is "eight billion, one hundred fifty-seven million, eight hundred seventy-four thousand, eight hundred sixty-four".