18187148 has 12 divisors (see below), whose sum is σ = 36374352. Its totient is φ = 7794480.

The previous prime is 18187133. The next prime is 18187153. The reversal of 18187148 is 84178181.

18187148 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324743 + ... + 324798.

It is an arithmetic number, because the mean of its divisors is an integer number (3031196).

Almost surely, 2^18187148 is an apocalyptic number.

It is an amenable number.

18187148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18187148 is a wasteful number, since it uses less digits than its factorization.

18187148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649552 (or 649550 counting only the distinct ones).

The product of its digits is 14336, while the sum is 38.

The square root of 18187148 is about 4264.6392578974. The cubic root of 18187148 is about 262.9792809944.

The spelling of 18187148 in words is "eighteen million, one hundred eighty-seven thousand, one hundred forty-eight".