18858412 has 12 divisors (see below), whose sum is σ = 34739320. Its totient is φ = 8932896.

The previous prime is 18858391. The next prime is 18858473. The reversal of 18858412 is 21485881.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123993 + ... + 124144.

Almost surely, 2^18858412 is an apocalyptic number.

It is an amenable number.

18858412 is a deficient number, since it is larger than the sum of its proper divisors (15880908).

18858412 is a wasteful number, since it uses less digits than its factorization.

18858412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248160 (or 248158 counting only the distinct ones).

The product of its digits is 20480, while the sum is 37.

The square root of 18858412 is about 4342.6273153472. The cubic root of 18858412 is about 266.1756805801.

The spelling of 18858412 in words is "eighteen million, eight hundred fifty-eight thousand, four hundred twelve".