18674408 has 8 divisors (see below), whose sum is σ = 35014530. Its totient is φ = 9337200.

The previous prime is 18674407. The next prime is 18674423. The reversal of 18674408 is 80447681.

It can be written as a sum of positive squares in only one way, i.e., 10252804 + 8421604 = 3202^2 + 2902^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18674401) 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 as a sum of consecutive naturals, namely, 1167143 + ... + 1167158.

Almost surely, 2^18674408 is an apocalyptic number.

It is an amenable number.

18674408 is a deficient number, since it is larger than the sum of its proper divisors (16340122).

18674408 is a wasteful number, since it uses less digits than its factorization.

18674408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334307 (or 2334303 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 18674408 is about 4321.3895913236. The cubic root of 18674408 is about 265.3071459443.

The spelling of 18674408 in words is "eighteen million, six hundred seventy-four thousand, four hundred eight".