18738712 has 64 divisors (see below), whose sum is σ = 39283200. Its totient is φ = 8346240.

The previous prime is 18738703. The next prime is 18738719. The reversal of 18738712 is 21783781.

It is a super-2 number, since 2×18738712² = 702278654837888, which contains 22 as substring.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18738719) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 307162 + ... + 307222.

It is an arithmetic number, because the mean of its divisors is an integer number (613800).

Almost surely, 2^18738712 is an apocalyptic number.

It is an amenable number.

18738712 is an abundant number, since it is smaller than the sum of its proper divisors (20544488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18738712 is a wasteful number, since it uses less digits than its factorization.

18738712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 172 counting only the distinct ones).

The product of its digits is 18816, while the sum is 37.

The square root of 18738712 is about 4328.8233967211. The cubic root of 18738712 is about 265.6113191939.

It can be divided in two parts, 1873 and 8712, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 18738712 in words is "eighteen million, seven hundred thirty-eight thousand, seven hundred twelve".