18120668 has 12 divisors (see below), whose sum is σ = 31793832. Its totient is φ = 9036720.

The previous prime is 18120653. The next prime is 18120689. The reversal of 18120668 is 86602181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4118 + ... + 7293.

It is an arithmetic number, because the mean of its divisors is an integer number (2649486).

Almost surely, 2^18120668 is an apocalyptic number.

It is an amenable number.

18120668 is a deficient number, since it is larger than the sum of its proper divisors (13673164).

18120668 is a wasteful number, since it uses less digits than its factorization.

18120668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11812 (or 11810 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18120668 is about 4256.8377934800. The cubic root of 18120668 is about 262.6584645616.

The spelling of 18120668 in words is "eighteen million, one hundred twenty thousand, six hundred sixty-eight".