18498572 has 6 divisors (see below), whose sum is σ = 32372508. Its totient is φ = 9249284.

The previous prime is 18498563. The next prime is 18498583. The reversal of 18498572 is 27589481.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2312318 + ... + 2312325.

It is an arithmetic number, because the mean of its divisors is an integer number (5395418).

Almost surely, 2^18498572 is an apocalyptic number.

It is an amenable number.

18498572 is a deficient number, since it is larger than the sum of its proper divisors (13873936).

18498572 is a wasteful number, since it uses less digits than its factorization.

18498572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624647 (or 4624645 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 18498572 is about 4300.9966286897. The cubic root of 18498572 is about 264.4718184961.

Subtracting 18498572 from its reverse (27589481), we obtain a palindrome (9090909).

The spelling of 18498572 in words is "eighteen million, four hundred ninety-eight thousand, five hundred seventy-two".