1979791834 has 4 divisors (see below), whose sum is σ = 2969687754. Its totient is φ = 989895916.

The previous prime is 1979791829. The next prime is 1979791837. The reversal of 1979791834 is 4381979791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1940666809 + 39125025 = 44053^2 + 6255^2 .

It is not an unprimeable number, because it can be changed into a prime (1979791837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494947957 + ... + 494947960.

Almost surely, 2^1979791834 is an apocalyptic number.

1979791834 is a deficient number, since it is larger than the sum of its proper divisors (989895920).

1979791834 is an equidigital number, since it uses as much as digits as its factorization.

1979791834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989895919.

The product of its digits is 3429216, while the sum is 58.

The square root of 1979791834 is about 44494.8517696149. The cubic root of 1979791834 is about 1255.6632281164.

The spelling of 1979791834 in words is "one billion, nine hundred seventy-nine million, seven hundred ninety-one thousand, eight hundred thirty-four".