7988379157 has 8 divisors (see below), whose sum is σ = 8716041792. Its totient is φ = 7260957600.

The previous prime is 7988379149. The next prime is 7988379199. The reversal of 7988379157 is 7519738897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7988379157 - 2³ = 7988379149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7988379107) 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, 12888 + ... + 127054.

It is an arithmetic number, because the mean of its divisors is an integer number (1089505224).

Almost surely, 2^7988379157 is an apocalyptic number.

It is an amenable number.

7988379157 is a deficient number, since it is larger than the sum of its proper divisors (727662635).

7988379157 is a wasteful number, since it uses less digits than its factorization.

7988379157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120539.

The product of its digits is 26671680, while the sum is 64.

The square root of 7988379157 is about 89377.7330043675. The cubic root of 7988379157 is about 1999.0311271351.

The spelling of 7988379157 in words is "seven billion, nine hundred eighty-eight million, three hundred seventy-nine thousand, one hundred fifty-seven".