18500836 has 12 divisors (see below), whose sum is σ = 33129712. Its totient is φ = 9035208.

The previous prime is 18500827. The next prime is 18500849. The reversal of 18500836 is 63800581.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18500798 and 18500807.

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, 53610 + ... + 53953.

Almost surely, 2^18500836 is an apocalyptic number.

It is an amenable number.

18500836 is a deficient number, since it is larger than the sum of its proper divisors (14628876).

18500836 is a wasteful number, since it uses less digits than its factorization.

18500836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107610 (or 107608 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 18500836 is about 4301.2598154494. The cubic root of 18500836 is about 264.4826074329.

The spelling of 18500836 in words is "eighteen million, five hundred thousand, eight hundred thirty-six".