18149136 has 40 divisors (see below), whose sum is σ = 48401664. Its totient is φ = 5854080.

The previous prime is 18149119. The next prime is 18149171. The reversal of 18149136 is 63194181.

18149136 = 103² + 104² + ... + 381².

It is a super-2 number, since 2×18149136² = 658782275092992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18149097 and 18149106.

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 in 7 ways as a sum of consecutive naturals, for example, 4611 + ... + 7586.

Almost surely, 2^18149136 is an apocalyptic number.

18149136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18149136 is an abundant number, since it is smaller than the sum of its proper divisors (30252528).

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

18149136 is a wasteful number, since it uses less digits than its factorization.

18149136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12239 (or 12233 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 18149136 is about 4260.1802778756. The cubic root of 18149136 is about 262.7959401572.

The spelling of 18149136 in words is "eighteen million, one hundred forty-nine thousand, one hundred thirty-six".