18404148 has 24 divisors (see below), whose sum is σ = 49077952. Its totient is φ = 5258304.

The previous prime is 18404147. The next prime is 18404161. The reversal of 18404148 is 84140481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18404147) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 109465 + ... + 109632.

Almost surely, 2^18404148 is an apocalyptic number.

It is an amenable number.

18404148 is an abundant number, since it is smaller than the sum of its proper divisors (30673804).

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

18404148 is a wasteful number, since it uses less digits than its factorization.

18404148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219111 (or 219109 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 18404148 is about 4290.0055944019. The cubic root of 18404148 is about 264.0210612215.

The spelling of 18404148 in words is "eighteen million, four hundred four thousand, one hundred forty-eight".