1979158074 has 16 divisors (see below), whose sum is σ = 4006007712. Its totient is φ = 651770768.

The previous prime is 1979158067. The next prime is 1979158183. The reversal of 1979158074 is 4708519791.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986609 + ... + 1987604.

It is an arithmetic number, because the mean of its divisors is an integer number (250375482).

Almost surely, 2^1979158074 is an apocalyptic number.

1979158074 is an abundant number, since it is smaller than the sum of its proper divisors (2026849638).

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

1979158074 is a wasteful number, since it uses less digits than its factorization.

1979158074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974301.

The product of its (nonzero) digits is 635040, while the sum is 51.

The square root of 1979158074 is about 44487.7294767894. The cubic root of 1979158074 is about 1255.5292284969.

The spelling of 1979158074 in words is "one billion, nine hundred seventy-nine million, one hundred fifty-eight thousand, seventy-four".