18772315 has 8 divisors (see below), whose sum is σ = 22835808. Its totient is φ = 14811840.

The previous prime is 18772297. The next prime is 18772319. The reversal of 18772315 is 51327781.

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

It is not a de Polignac number, because 18772315 - 2⁹ = 18771803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18772319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25351 + ... + 26080.

It is an arithmetic number, because the mean of its divisors is an integer number (2854476).

Almost surely, 2^18772315 is an apocalyptic number.

18772315 is a deficient number, since it is larger than the sum of its proper divisors (4063493).

18772315 is an equidigital number, since it uses as much as digits as its factorization.

18772315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51509.

The product of its digits is 11760, while the sum is 34.

The square root of 18772315 is about 4332.7029669711. The cubic root of 18772315 is about 265.7699926285.

The spelling of 18772315 in words is "eighteen million, seven hundred seventy-two thousand, three hundred fifteen".