7914578920 has 32 divisors (see below), whose sum is σ = 17885586600. Its totient is φ = 3152003328.

The previous prime is 7914578879. The next prime is 7914578929. The reversal of 7914578920 is 298754197.

It can be written as a sum of positive squares in 4 ways, for example, as 7832604004 + 81974916 = 88502^2 + 9054^2 .

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7914578929) 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, 422859 + ... + 441178.

Almost surely, 2^7914578920 is an apocalyptic number.

It is an amenable number.

7914578920 is an abundant number, since it is smaller than the sum of its proper divisors (9971007680).

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

7914578920 is a wasteful number, since it uses less digits than its factorization.

7914578920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864277 (or 864273 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 7914578920 is about 88963.9192032365. The cubic root of 7914578920 is about 1992.8560893195.

The spelling of 7914578920 in words is "seven billion, nine hundred fourteen million, five hundred seventy-eight thousand, nine hundred twenty".