18103892 has 12 divisors (see below), whose sum is σ = 31711680. Its totient is φ = 9043416.

The previous prime is 18103879. The next prime is 18103909. The reversal of 18103892 is 29830181.

It is an alternating number because its digits alternate between odd and even.

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 in 3 ways as a sum of consecutive naturals, for example, 6773 + ... + 9059.

It is an arithmetic number, because the mean of its divisors is an integer number (2642640).

Almost surely, 2^18103892 is an apocalyptic number.

It is an amenable number.

18103892 is a deficient number, since it is larger than the sum of its proper divisors (13607788).

18103892 is a wasteful number, since it uses less digits than its factorization.

18103892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270 (or 4268 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 18103892 is about 4254.8668604317. The cubic root of 18103892 is about 262.5773836858.

The spelling of 18103892 in words is "eighteen million, one hundred three thousand, eight hundred ninety-two".