18816136 has 32 divisors (see below), whose sum is σ = 36175680. Its totient is φ = 9172800.

The previous prime is 18816131. The next prime is 18816173. The reversal of 18816136 is 63161881.

It is not an unprimeable number, because it can be changed into a prime (18816131) 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, 89071 + ... + 89281.

It is an arithmetic number, because the mean of its divisors is an integer number (1130490).

Almost surely, 2^18816136 is an apocalyptic number.

It is an amenable number.

18816136 is a deficient number, since it is larger than the sum of its proper divisors (17359544).

18816136 is a wasteful number, since it uses less digits than its factorization.

18816136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 441 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 18816136 is about 4337.7570240851. The cubic root of 18816136 is about 265.9766312597.

The spelling of 18816136 in words is "eighteen million, eight hundred sixteen thousand, one hundred thirty-six".