18320675 has 6 divisors (see below), whose sum is σ = 22717668. Its totient is φ = 14656520.

The previous prime is 18320651. The next prime is 18320677. The reversal of 18320675 is 57602381.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-18320675 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18320677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 366389 + ... + 366438.

It is an arithmetic number, because the mean of its divisors is an integer number (3786278).

Almost surely, 2^18320675 is an apocalyptic number.

18320675 is a deficient number, since it is larger than the sum of its proper divisors (4396993).

18320675 is an equidigital number, since it uses as much as digits as its factorization.

18320675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732837 (or 732832 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 18320675 is about 4280.2657627769. The cubic root of 18320675 is about 263.6212956653.

The spelling of 18320675 in words is "eighteen million, three hundred twenty thousand, six hundred seventy-five".