8155638974 has 8 divisors (see below), whose sum is σ = 13981095408. Its totient is φ = 3495273840.

The previous prime is 8155638961. The next prime is 8155639031. The reversal of 8155638974 is 4798365518.

8155638974 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 291272807 + ... + 291272834.

It is an arithmetic number, because the mean of its divisors is an integer number (1747636926).

Almost surely, 2^8155638974 is an apocalyptic number.

8155638974 is a deficient number, since it is larger than the sum of its proper divisors (5825456434).

8155638974 is a wasteful number, since it uses less digits than its factorization.

8155638974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582545650.

The product of its digits is 7257600, while the sum is 56.

The square root of 8155638974 is about 90308.5764144248. The cubic root of 8155638974 is about 2012.8867026098.

The spelling of 8155638974 in words is "eight billion, one hundred fifty-five million, six hundred thirty-eight thousand, nine hundred seventy-four".