18974461852 has 12 divisors (see below), whose sum is σ = 34350319080. Its totient is φ = 9160084976.

The previous prime is 18974461813. The next prime is 18974461867. The reversal of 18974461852 is 25816447981.

It is a junction number, because it is equal to n+sod(n) for n = 18974461793 and 18974461802.

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, 81786358 + ... + 81786589.

It is an arithmetic number, because the mean of its divisors is an integer number (2862526590).

Almost surely, 2^18974461852 is an apocalyptic number.

It is an amenable number.

18974461852 is a deficient number, since it is larger than the sum of its proper divisors (15375857228).

18974461852 is a wasteful number, since it uses less digits than its factorization.

18974461852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163572980 (or 163572978 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The spelling of 18974461852 in words is "eighteen billion, nine hundred seventy-four million, four hundred sixty-one thousand, eight hundred fifty-two".