18876065 has 16 divisors (see below), whose sum is σ = 24570000. Its totient is φ = 13838592.

The previous prime is 18876049. The next prime is 18876073. The reversal of 18876065 is 56067881.

It can be written as a sum of positive squares in 8 ways, for example, as 1868689 + 17007376 = 1367^2 + 4124^2 .

It is a cyclic number.

It is not a de Polignac number, because 18876065 - 2⁴ = 18876049 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8711 + ... + 10659.

It is an arithmetic number, because the mean of its divisors is an integer number (1535625).

Almost surely, 2^18876065 is an apocalyptic number.

It is an amenable number.

18876065 is a deficient number, since it is larger than the sum of its proper divisors (5693935).

18876065 is a wasteful number, since it uses less digits than its factorization.

18876065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 18876065 is about 4344.6593652437. The cubic root of 18876065 is about 266.2587086721.

The spelling of 18876065 in words is "eighteen million, eight hundred seventy-six thousand, sixty-five".