18224465 has 8 divisors (see below), whose sum is σ = 24993600. Its totient is φ = 12496752.

The previous prime is 18224449. The next prime is 18224491. The reversal of 18224465 is 56442281.

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 18224465 - 2⁴ = 18224449 is a prime.

It is a super-2 number, since 2×18224465² = 664262249072450, which contains 22 as substring.

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, 260315 + ... + 260384.

It is an arithmetic number, because the mean of its divisors is an integer number (3124200).

Almost surely, 2^18224465 is an apocalyptic number.

It is an amenable number.

18224465 is a deficient number, since it is larger than the sum of its proper divisors (6769135).

18224465 is an equidigital number, since it uses as much as digits as its factorization.

18224465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520711.

The product of its digits is 15360, while the sum is 32.

The square root of 18224465 is about 4269.0121808212. The cubic root of 18224465 is about 263.1590213531.

The spelling of 18224465 in words is "eighteen million, two hundred twenty-four thousand, four hundred sixty-five".