18100136 has 16 divisors (see below), whose sum is σ = 34578900. Its totient is φ = 8879104.

The previous prime is 18100111. The next prime is 18100151. The reversal of 18100136 is 63100181.

It can be written as a sum of positive squares in 2 ways, for example, as 18062500 + 37636 = 4250^2 + 194^2 .

It is a super-2 number, since 2×18100136² = 655229846436992, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 20921 + ... + 21768.

Almost surely, 2^18100136 is an apocalyptic number.

It is an amenable number.

18100136 is a deficient number, since it is larger than the sum of its proper divisors (16478764).

18100136 is a wasteful number, since it uses less digits than its factorization.

18100136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42748 (or 42744 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 18100136 is about 4254.4254606233. The cubic root of 18100136 is about 262.5592235232.

The spelling of 18100136 in words is "eighteen million, one hundred thousand, one hundred thirty-six".