18474136 has 8 divisors (see below), whose sum is σ = 34639020. Its totient is φ = 9237064.

The previous prime is 18474119. The next prime is 18474143. The reversal of 18474136 is 63147481.

It is a happy number.

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1154626 + ... + 1154641.

Almost surely, 2^18474136 is an apocalyptic number.

It is an amenable number.

18474136 is a deficient number, since it is larger than the sum of its proper divisors (16164884).

18474136 is a wasteful number, since it uses less digits than its factorization.

18474136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309273 (or 2309269 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 18474136 is about 4298.1549530002. The cubic root of 18474136 is about 264.3553143485.

The spelling of 18474136 in words is "eighteen million, four hundred seventy-four thousand, one hundred thirty-six".