18940484572 has 6 divisors (see below), whose sum is σ = 33145848008. Its totient is φ = 9470242284.

The previous prime is 18940484557. The next prime is 18940484579. The reversal of 18940484572 is 27548404981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18940484579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2367560568 + ... + 2367560575.

Almost surely, 2^18940484572 is an apocalyptic number.

It is an amenable number.

18940484572 is a deficient number, since it is larger than the sum of its proper divisors (14205363436).

18940484572 is a wasteful number, since it uses less digits than its factorization.

18940484572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735121147 (or 4735121145 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 18940484572 in words is "eighteen billion, nine hundred forty million, four hundred eighty-four thousand, five hundred seventy-two".