18764265 has 32 divisors (see below), whose sum is σ = 33134976. Its totient is φ = 9008640.

The previous prime is 18764237. The next prime is 18764281. The reversal of 18764265 is 56246781.

It is not a de Polignac number, because 18764265 - 2⁶ = 18764201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6822 + ... + 9168.

It is an arithmetic number, because the mean of its divisors is an integer number (1035468).

Almost surely, 2^18764265 is an apocalyptic number.

18764265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18764265 is a deficient number, since it is larger than the sum of its proper divisors (14370711).

18764265 is a wasteful number, since it uses less digits than its factorization.

18764265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409.

The product of its digits is 80640, while the sum is 39.

The square root of 18764265 is about 4331.7738860656. The cubic root of 18764265 is about 265.7319977705.

The spelling of 18764265 in words is "eighteen million, seven hundred sixty-four thousand, two hundred sixty-five".