8639162540 has 12 divisors (see below), whose sum is σ = 18142241376. Its totient is φ = 3455665008.

The previous prime is 8639162537. The next prime is 8639162599. The reversal of 8639162540 is 452619368.

It is a junction number, because it is equal to n+sod(n) for n = 8639162491 and 8639162500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215979044 + ... + 215979083.

It is an arithmetic number, because the mean of its divisors is an integer number (1511853448).

Almost surely, 2^8639162540 is an apocalyptic number.

It is an amenable number.

8639162540 is an abundant number, since it is smaller than the sum of its proper divisors (9503078836).

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

8639162540 is a wasteful number, since it uses less digits than its factorization.

8639162540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431958136 (or 431958134 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 8639162540 is about 92947.0953822657. The cubic root of 8639162540 is about 2051.9048358858.

The spelling of 8639162540 in words is "eight billion, six hundred thirty-nine million, one hundred sixty-two thousand, five hundred forty".