18965265 has 16 divisors (see below), whose sum is σ = 33103296. Its totient is φ = 9195200.

The previous prime is 18965257. The next prime is 18965281. The reversal of 18965265 is 56256981.

It is not a de Polignac number, because 18965265 - 2³ = 18965257 is a prime.

It is a Curzon 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, 57306 + ... + 57635.

It is an arithmetic number, because the mean of its divisors is an integer number (2068956).

Almost surely, 2^18965265 is an apocalyptic number.

18965265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18965265 is a deficient number, since it is larger than the sum of its proper divisors (14138031).

18965265 is a wasteful number, since it uses less digits than its factorization.

18965265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114960.

The product of its digits is 129600, while the sum is 42.

The square root of 18965265 is about 4354.9127430983. The cubic root of 18965265 is about 266.6774570287.

The spelling of 18965265 in words is "eighteen million, nine hundred sixty-five thousand, two hundred sixty-five".