18772970442 has 8 divisors (see below), whose sum is σ = 37545940896. Its totient is φ = 6257656812.

The previous prime is 18772970429. The next prime is 18772970449. The reversal of 18772970442 is 24407927781.

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

18772970442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18772970449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1564414198 + ... + 1564414209.

It is an arithmetic number, because the mean of its divisors is an integer number (4693242612).

Almost surely, 2^18772970442 is an apocalyptic number.

18772970442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18772970442 is a wasteful number, since it uses less digits than its factorization.

18772970442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128828412.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 18772970442 in words is "eighteen billion, seven hundred seventy-two million, nine hundred seventy thousand, four hundred forty-two".