18512408 has 8 divisors (see below), whose sum is σ = 34710780. Its totient is φ = 9256200.

The previous prime is 18512387. The next prime is 18512413. The reversal of 18512408 is 80421581.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157018 + ... + 1157033.

Almost surely, 2^18512408 is an apocalyptic number.

It is an amenable number.

18512408 is a deficient number, since it is larger than the sum of its proper divisors (16198372).

18512408 is a wasteful number, since it uses less digits than its factorization.

18512408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314057 (or 2314053 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 18512408 is about 4302.6047924484. The cubic root of 18512408 is about 264.5377392629.

Adding to 18512408 its reverse (80421581), we get a palindrome (98933989).

The spelling of 18512408 in words is "eighteen million, five hundred twelve thousand, four hundred eight".