18229265 has 16 divisors (see below), whose sum is σ = 23137920. Its totient is φ = 13749120.

The previous prime is 18229261. The next prime is 18229327. The reversal of 18229265 is 56292281.

It is a happy number.

It is not a de Polignac number, because 18229265 - 2² = 18229261 is a prime.

It is a super-2 number, since 2×18229265² = 664612204880450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18229261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29237 + ... + 29853.

It is an arithmetic number, because the mean of its divisors is an integer number (1446120).

Almost surely, 2^18229265 is an apocalyptic number.

It is an amenable number.

18229265 is a deficient number, since it is larger than the sum of its proper divisors (4908655).

18229265 is a wasteful number, since it uses less digits than its factorization.

18229265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952.

The product of its digits is 17280, while the sum is 35.

The square root of 18229265 is about 4269.5743347552. The cubic root of 18229265 is about 263.1821231272.

The spelling of 18229265 in words is "eighteen million, two hundred twenty-nine thousand, two hundred sixty-five".