18090054 has 20 divisors (see below), whose sum is σ = 40535484. Its totient is φ = 6029964.

The previous prime is 18090053. The next prime is 18090089. The reversal of 18090054 is 45009081.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18090053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 55672 + ... + 55995.

Almost surely, 2^18090054 is an apocalyptic number.

18090054 is an abundant number, since it is smaller than the sum of its proper divisors (22445430).

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

18090054 is a wasteful number, since it uses less digits than its factorization.

18090054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111681 (or 111672 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 18090054 is about 4253.2404117332. The cubic root of 18090054 is about 262.5104648889.

The spelling of 18090054 in words is "eighteen million, ninety thousand, fifty-four".