18064642 has 16 divisors (see below), whose sum is σ = 28771200. Its totient is φ = 8477248.

The previous prime is 18064619. The next prime is 18064663. The reversal of 18064642 is 24646081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19923 + ... + 20809.

It is an arithmetic number, because the mean of its divisors is an integer number (1798200).

Almost surely, 2^18064642 is an apocalyptic number.

18064642 is a deficient number, since it is larger than the sum of its proper divisors (10706558).

18064642 is a wasteful number, since it uses less digits than its factorization.

18064642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 18064642 is about 4250.2519925294. The cubic root of 18064642 is about 262.3874867775.

The spelling of 18064642 in words is "eighteen million, sixty-four thousand, six hundred forty-two".