18979204774 has 8 divisors (see below), whose sum is σ = 28570120488. Its totient is φ = 9455831280.

The previous prime is 18979204729. The next prime is 18979204793. The reversal of 18979204774 is 47740297981.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16884852 + ... + 16885975.

It is an arithmetic number, because the mean of its divisors is an integer number (3571265061).

Almost surely, 2^18979204774 is an apocalyptic number.

18979204774 is a deficient number, since it is larger than the sum of its proper divisors (9590915714).

18979204774 is a wasteful number, since it uses less digits than its factorization.

18979204774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33771110.

The product of its (nonzero) digits is 7112448, while the sum is 58.

The spelling of 18979204774 in words is "eighteen billion, nine hundred seventy-nine million, two hundred four thousand, seven hundred seventy-four".