18322945 has 8 divisors (see below), whose sum is σ = 22499136. Its totient is φ = 14317296.

The previous prime is 18322939. The next prime is 18322951. The reversal of 18322945 is 54922381.

It is an interprime number because it is at equal distance from previous prime (18322939) and next prime (18322951).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18322945 - 2³ = 18322937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18322945.

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, 42397 + ... + 42826.

It is an arithmetic number, because the mean of its divisors is an integer number (2812392).

Almost surely, 2^18322945 is an apocalyptic number.

It is an amenable number.

18322945 is a deficient number, since it is larger than the sum of its proper divisors (4176191).

18322945 is an equidigital number, since it uses as much as digits as its factorization.

18322945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85271.

The product of its digits is 17280, while the sum is 34.

The square root of 18322945 is about 4280.5309250139. The cubic root of 18322945 is about 263.6321831031.

The spelling of 18322945 in words is "eighteen million, three hundred twenty-two thousand, nine hundred forty-five".