18993054 has 16 divisors (see below), whose sum is σ = 38198160. Its totient is φ = 6295680.

The previous prime is 18993053. The next prime is 18993089. The reversal of 18993054 is 45039981.

It is a super-2 number, since 2×18993054² = 721472200493832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18993053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7659 + ... + 9830.

It is an arithmetic number, because the mean of its divisors is an integer number (2387385).

Almost surely, 2^18993054 is an apocalyptic number.

18993054 is an abundant number, since it is smaller than the sum of its proper divisors (19205106).

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

18993054 is a wasteful number, since it uses less digits than its factorization.

18993054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17675.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 18993054 is about 4358.1021098639. The cubic root of 18993054 is about 266.8076438600.

The spelling of 18993054 in words is "eighteen million, nine hundred ninety-three thousand, fifty-four".