18914765 has 4 divisors (see below), whose sum is σ = 22697724. Its totient is φ = 15131808.

The previous prime is 18914759. The next prime is 18914789. The reversal of 18914765 is 56741981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8404201 + 10510564 = 2899^2 + 3242^2 .

It is a cyclic number.

It is not a de Polignac number, because 18914765 - 2⁸ = 18914509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1891472 + ... + 1891481.

It is an arithmetic number, because the mean of its divisors is an integer number (5674431).

Almost surely, 2^18914765 is an apocalyptic number.

It is an amenable number.

18914765 is a deficient number, since it is larger than the sum of its proper divisors (3782959).

18914765 is an equidigital number, since it uses as much as digits as its factorization.

18914765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3782958.

The product of its digits is 60480, while the sum is 41.

The square root of 18914765 is about 4349.1108286637. The cubic root of 18914765 is about 266.4405470316.

The spelling of 18914765 in words is "eighteen million, nine hundred fourteen thousand, seven hundred sixty-five".