18265115 has 16 divisors (see below), whose sum is σ = 24009696. Its totient is φ = 13228800.

The previous prime is 18265109. The next prime is 18265127. The reversal of 18265115 is 51156281.

It is not a de Polignac number, because 18265115 - 2¹⁶ = 18199579 is a prime.

It is a super-2 number, since 2×18265115² = 667228851926450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16685 + ... + 17745.

It is an arithmetic number, because the mean of its divisors is an integer number (1500606).

Almost surely, 2^18265115 is an apocalyptic number.

18265115 is a deficient number, since it is larger than the sum of its proper divisors (5744581).

18265115 is a wasteful number, since it uses less digits than its factorization.

18265115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390.

The product of its digits is 2400, while the sum is 29.

The square root of 18265115 is about 4273.7705834544. The cubic root of 18265115 is about 263.3545363831.

The spelling of 18265115 in words is "eighteen million, two hundred sixty-five thousand, one hundred fifteen".