18536066 has 4 divisors (see below), whose sum is σ = 27804102. Its totient is φ = 9268032.

The previous prime is 18536057. The next prime is 18536081. The reversal of 18536066 is 66063581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66063581 = 17 ⋅3886093.

It can be written as a sum of positive squares in only one way, i.e., 12752041 + 5784025 = 3571^2 + 2405^2 .

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 as a sum of consecutive naturals, namely, 4634015 + ... + 4634018.

Almost surely, 2^18536066 is an apocalyptic number.

18536066 is a deficient number, since it is larger than the sum of its proper divisors (9268036).

18536066 is an equidigital number, since it uses as much as digits as its factorization.

18536066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268035.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 18536066 is about 4305.3531794732. The cubic root of 18536066 is about 264.6503802860.

The spelling of 18536066 in words is "eighteen million, five hundred thirty-six thousand, sixty-six".