18676465 has 4 divisors (see below), whose sum is σ = 22411764. Its totient is φ = 14941168.

The previous prime is 18676459. The next prime is 18676481. The reversal of 18676465 is 56467681.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56467681 = 131 ⋅431051.

It can be written as a sum of positive squares in 2 ways, for example, as 13256881 + 5419584 = 3641^2 + 2328^2 .

It is a cyclic number.

It is not a de Polignac number, because 18676465 - 2⁹ = 18675953 is a prime.

It is a Duffinian 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, 1867642 + ... + 1867651.

It is an arithmetic number, because the mean of its divisors is an integer number (5602941).

Almost surely, 2^18676465 is an apocalyptic number.

It is an amenable number.

18676465 is a deficient number, since it is larger than the sum of its proper divisors (3735299).

18676465 is an equidigital number, since it uses as much as digits as its factorization.

18676465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735298.

The product of its digits is 241920, while the sum is 43.

The square root of 18676465 is about 4321.6275869168. The cubic root of 18676465 is about 265.3168868468.

The spelling of 18676465 in words is "eighteen million, six hundred seventy-six thousand, four hundred sixty-five".