18122568 has 16 divisors (see below), whose sum is σ = 45306480. Its totient is φ = 6040848.

The previous prime is 18122557. The next prime is 18122591. The reversal of 18122568 is 86522181.

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, 377530 + ... + 377577.

It is an arithmetic number, because the mean of its divisors is an integer number (2831655).

Almost surely, 2^18122568 is an apocalyptic number.

It is an amenable number.

18122568 is an abundant number, since it is smaller than the sum of its proper divisors (27183912).

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

18122568 is a wasteful number, since it uses less digits than its factorization.

18122568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755116 (or 755112 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 18122568 is about 4257.0609579850. The cubic root of 18122568 is about 262.6676443858.

The spelling of 18122568 in words is "eighteen million, one hundred twenty-two thousand, five hundred sixty-eight".