18472265 has 16 divisors (see below), whose sum is σ = 25852800. Its totient is φ = 12665520.

The previous prime is 18472261. The next prime is 18472291. The reversal of 18472265 is 56227481.

It is not a de Polignac number, because 18472265 - 2² = 18472261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (18472261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3671 + ... + 7100.

It is an arithmetic number, because the mean of its divisors is an integer number (1615800).

Almost surely, 2^18472265 is an apocalyptic number.

It is an amenable number.

18472265 is a deficient number, since it is larger than the sum of its proper divisors (7380535).

18472265 is an equidigital number, since it uses as much as digits as its factorization.

18472265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10797 (or 10783 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 18472265 is about 4297.9372959595. The cubic root of 18472265 is about 264.3463897003.

The spelling of 18472265 in words is "eighteen million, four hundred seventy-two thousand, two hundred sixty-five".