7918856140 has 96 divisors (see below), whose sum is σ = 18298296576. Its totient is φ = 2860615680.

The previous prime is 7918856129. The next prime is 7918856167. The reversal of 7918856140 is 416588197.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7178829 + ... + 7179931.

It is an arithmetic number, because the mean of its divisors is an integer number (190607256).

Almost surely, 2^7918856140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7918856140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9149148288).

7918856140 is an abundant number, since it is smaller than the sum of its proper divisors (10379440436).

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

7918856140 is a wasteful number, since it uses less digits than its factorization.

7918856140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 7918856140 is about 88987.9550276328. The cubic root of 7918856140 is about 1993.2150197174.

The spelling of 7918856140 in words is "seven billion, nine hundred eighteen million, eight hundred fifty-six thousand, one hundred forty".