18136346 has 12 divisors (see below), whose sum is σ = 27572202. Its totient is φ = 8947224.

The previous prime is 18136319. The next prime is 18136357. The reversal of 18136346 is 64363181.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 7645225 = 3239^2 + 2765^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11756 + ... + 13208.

Almost surely, 2^18136346 is an apocalyptic number.

18136346 is a deficient number, since it is larger than the sum of its proper divisors (9435856).

18136346 is an equidigital number, since it uses as much as digits as its factorization.

18136346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1534 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 18136346 is about 4258.6789031342. The cubic root of 18136346 is about 262.7341934173.

The spelling of 18136346 in words is "eighteen million, one hundred thirty-six thousand, three hundred forty-six".