18133732090384 has 15 divisors (see below), whose sum is σ = 35134138927533. Its totient is φ = 9066857528448.

The previous prime is 18133732090379. The next prime is 18133732090393. The reversal of 18133732090384 is 48309023733181.

The square root of 18133732090384 is 4258372.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7647326544400 + 10486405545984 = 2765380^2 + 3238272^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16501192 + ... + 17565784.

Almost surely, 2^{18133732090384} is an apocalyptic number.

18133732090384 is the 4258372-nd square number.

It is an amenable number.

18133732090384 is a deficient number, since it is larger than the sum of its proper divisors (17000406837149).

18133732090384 is an frugal number, since it uses more digits than its factorization.

18133732090384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129194 (or 1064595 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 18133732090384 in words is "eighteen trillion, one hundred thirty-three billion, seven hundred thirty-two million, ninety thousand, three hundred eighty-four".