18955424 has 12 divisors (see below), whose sum is σ = 37318554. Its totient is φ = 9477696.

The previous prime is 18955403. The next prime is 18955451. The reversal of 18955424 is 42455981.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 739600 = 4268^2 + 860^2 .

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 296147 + ... + 296210.

Almost surely, 2^18955424 is an apocalyptic number.

It is an amenable number.

18955424 is a deficient number, since it is larger than the sum of its proper divisors (18363130).

18955424 is an equidigital number, since it uses as much as digits as its factorization.

18955424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592367 (or 592359 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 18955424 is about 4353.7827231041. The cubic root of 18955424 is about 266.6313230936.

The spelling of 18955424 in words is "eighteen million, nine hundred fifty-five thousand, four hundred twenty-four".