18061568 has 36 divisors (see below), whose sum is σ = 41207040. Its totient is φ = 7739904.

The previous prime is 18061567. The next prime is 18061573. The reversal of 18061568 is 86516081.

It is not an unprimeable number, because it can be changed into a prime (18061567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3248 + ... + 6831.

It is an arithmetic number, because the mean of its divisors is an integer number (1144640).

Almost surely, 2^18061568 is an apocalyptic number.

It is an amenable number.

18061568 is an abundant number, since it is smaller than the sum of its proper divisors (23145472).

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

18061568 is an equidigital number, since it uses as much as digits as its factorization.

18061568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10102 (or 10088 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18061568 is about 4249.8903515267. The cubic root of 18061568 is about 262.3726027315.

The spelling of 18061568 in words is "eighteen million, sixty-one thousand, five hundred sixty-eight".