18387190484 has 12 divisors (see below), whose sum is σ = 34652782164. Its totient is φ = 8486395584.

The previous prime is 18387190457. The next prime is 18387190499. The reversal of 18387190484 is 48409178381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4028440900 + 14358749584 = 63470^2 + 119828^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176799857 + ... + 176799960.

It is an arithmetic number, because the mean of its divisors is an integer number (2887731847).

Almost surely, 2^18387190484 is an apocalyptic number.

It is an amenable number.

18387190484 is a deficient number, since it is larger than the sum of its proper divisors (16265591680).

18387190484 is a wasteful number, since it uses less digits than its factorization.

18387190484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353599834 (or 353599832 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 18387190484 in words is "eighteen billion, three hundred eighty-seven million, one hundred ninety thousand, four hundred eighty-four".