7918684328 has 32 divisors (see below), whose sum is σ = 14994201600. Its totient is φ = 3920383488.

The previous prime is 7918684327. The next prime is 7918684339. The reversal of 7918684328 is 8234868197.

It is a super-2 number, since 2×7918684328² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7918684327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416600 + ... + 435192.

It is an arithmetic number, because the mean of its divisors is an integer number (468568800).

Almost surely, 2^7918684328 is an apocalyptic number.

It is an amenable number.

7918684328 is a deficient number, since it is larger than the sum of its proper divisors (7075517272).

7918684328 is a wasteful number, since it uses less digits than its factorization.

7918684328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19121 (or 19117 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The square root of 7918684328 is about 88986.9896557918. The cubic root of 7918684328 is about 1993.2006043048.

The spelling of 7918684328 in words is "seven billion, nine hundred eighteen million, six hundred eighty-four thousand, three hundred twenty-eight".