7951992156 has 96 divisors (see below), whose sum is σ = 21470668800. Its totient is φ = 2542337280.

The previous prime is 7951992151. The next prime is 7951992161. The reversal of 7951992156 is 6512991597.

7951992156 is a `hidden beast` number, since 79 + 519 + 9 + 2 + 1 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (7951992151) and next prime (7951992161).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7951992151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367815 + ... + 388833.

It is an arithmetic number, because the mean of its divisors is an integer number (223652800).

Almost surely, 2^7951992156 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 7951992156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10735334400).

7951992156 is an abundant number, since it is smaller than the sum of its proper divisors (13518676644).

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

7951992156 is a wasteful number, since it uses less digits than its factorization.

7951992156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21176 (or 21168 counting only the distinct ones).

The product of its digits is 1530900, while the sum is 54.

The square root of 7951992156 is about 89173.9432569851. The cubic root of 7951992156 is about 1995.9913169315.

The spelling of 7951992156 in words is "seven billion, nine hundred fifty-one million, nine hundred ninety-two thousand, one hundred fifty-six".