18740465 has 8 divisors (see below), whose sum is σ = 22870080. Its totient is φ = 14738032.

The previous prime is 18740453. The next prime is 18740473. The reversal of 18740465 is 56404781.

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 18740465 - 2⁸ = 18740209 is a prime.

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, 31469 + ... + 32058.

It is an arithmetic number, because the mean of its divisors is an integer number (2858760).

Almost surely, 2^18740465 is an apocalyptic number.

It is an amenable number.

18740465 is a deficient number, since it is larger than the sum of its proper divisors (4129615).

18740465 is an equidigital number, since it uses as much as digits as its factorization.

18740465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63591.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 18740465 is about 4329.0258719486. The cubic root of 18740465 is about 265.6196015512.

The spelling of 18740465 in words is "eighteen million, seven hundred forty thousand, four hundred sixty-five".