18524949 has 8 divisors (see below), whose sum is σ = 25496832. Its totient is φ = 11951520.

The previous prime is 18524941. The next prime is 18524969. The reversal of 18524949 is 94942581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18524949 - 2³ = 18524941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18524949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18524941) 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, 99504 + ... + 99689.

It is an arithmetic number, because the mean of its divisors is an integer number (3187104).

Almost surely, 2^18524949 is an apocalyptic number.

It is an amenable number.

18524949 is a deficient number, since it is larger than the sum of its proper divisors (6971883).

18524949 is a wasteful number, since it uses less digits than its factorization.

18524949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199227.

The product of its digits is 103680, while the sum is 42.

The square root of 18524949 is about 4304.0619186996. The cubic root of 18524949 is about 264.5974617100.

The spelling of 18524949 in words is "eighteen million, five hundred twenty-four thousand, nine hundred forty-nine".