18874684 has 6 divisors (see below), whose sum is σ = 33030704. Its totient is φ = 9437340.

The previous prime is 18874649. The next prime is 18874703. The reversal of 18874684 is 48647881.

It is a happy number.

It is a super-3 number, since 3×18874684³ (a number of 23 digits) contains 333 as substring.

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, 2359332 + ... + 2359339.

Almost surely, 2^18874684 is an apocalyptic number.

It is an amenable number.

18874684 is a deficient number, since it is larger than the sum of its proper divisors (14156020).

18874684 is a wasteful number, since it uses less digits than its factorization.

18874684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718675 (or 4718673 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 18874684 is about 4344.5004315801. The cubic root of 18874684 is about 266.2522152240.

The spelling of 18874684 in words is "eighteen million, eight hundred seventy-four thousand, six hundred eighty-four".