18997254 has 24 divisors (see below), whose sum is σ = 42686280. Its totient is φ = 6332256.

The previous prime is 18997249. The next prime is 18997273. The reversal of 18997254 is 45279981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19059 + ... + 20030.

It is an arithmetic number, because the mean of its divisors is an integer number (1778595).

Almost surely, 2^18997254 is an apocalyptic number.

18997254 is an abundant number, since it is smaller than the sum of its proper divisors (23689026).

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

18997254 is an equidigital number, since it uses as much as digits as its factorization.

18997254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39106 (or 39094 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 18997254 is about 4358.5839443562. The cubic root of 18997254 is about 266.8273091109.

The spelling of 18997254 in words is "eighteen million, nine hundred ninety-seven thousand, two hundred fifty-four".