18137066 has 4 divisors (see below), whose sum is σ = 27205602. Its totient is φ = 9068532.

The previous prime is 18137051. The next prime is 18137083. The reversal of 18137066 is 66073181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 32041 = 4255^2 + 179^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4534265 + ... + 4534268.

Almost surely, 2^18137066 is an apocalyptic number.

18137066 is a deficient number, since it is larger than the sum of its proper divisors (9068536).

18137066 is an equidigital number, since it uses as much as digits as its factorization.

18137066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068535.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 18137066 is about 4258.7634355526. The cubic root of 18137066 is about 262.7376701580.

The spelling of 18137066 in words is "eighteen million, one hundred thirty-seven thousand, sixty-six".