18874612 has 6 divisors (see below), whose sum is σ = 33030578. Its totient is φ = 9437304.

The previous prime is 18874591. The next prime is 18874633. The reversal of 18874612 is 21647881.

It is an interprime number because it is at equal distance from previous prime (18874591) and next prime (18874633).

It can be written as a sum of positive squares in only one way, i.e., 16032016 + 2842596 = 4004^2 + 1686^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2359323 + ... + 2359330.

Almost surely, 2^18874612 is an apocalyptic number.

It is an amenable number.

18874612 is a deficient number, since it is larger than the sum of its proper divisors (14155966).

18874612 is a wasteful number, since it uses less digits than its factorization.

18874612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718657 (or 4718655 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 18874612 is about 4344.4921452340. The cubic root of 18874612 is about 266.2518766720.

The spelling of 18874612 in words is "eighteen million, eight hundred seventy-four thousand, six hundred twelve".