18136146 has 32 divisors (see below), whose sum is σ = 43637760. Its totient is φ = 4908816.

The previous prime is 18136141. The next prime is 18136171. The reversal of 18136146 is 64163181.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18136141) 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 15 ways as a sum of consecutive naturals, for example, 10566 + ... + 12161.

It is an arithmetic number, because the mean of its divisors is an integer number (1363680).

Almost surely, 2^18136146 is an apocalyptic number.

18136146 is an abundant number, since it is smaller than the sum of its proper divisors (25501614).

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

18136146 is a wasteful number, since it uses less digits than its factorization.

18136146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22758.

The product of its digits is 3456, while the sum is 30.

The square root of 18136146 is about 4258.6554216090. The cubic root of 18136146 is about 262.7332276397.

The spelling of 18136146 in words is "eighteen million, one hundred thirty-six thousand, one hundred forty-six".