18148208 has 20 divisors (see below), whose sum is σ = 37867368. Its totient is φ = 8376000.

The previous prime is 18148181. The next prime is 18148217. The reversal of 18148208 is 80284181.

It is a super-2 number, since 2×18148208² = 658714907222528, which contains 22 as substring.

It is a congruent number.

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, 43418 + ... + 43833.

Almost surely, 2^18148208 is an apocalyptic number.

It is an amenable number.

18148208 is an abundant number, since it is smaller than the sum of its proper divisors (19719160).

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

18148208 is a wasteful number, since it uses less digits than its factorization.

18148208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87272 (or 87266 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 18148208 is about 4260.0713609047. The cubic root of 18148208 is about 262.7914609947.

The spelling of 18148208 in words is "eighteen million, one hundred forty-eight thousand, two hundred eight".