18620965 has 8 divisors (see below), whose sum is σ = 24376608. Its totient is φ = 13542480.

The previous prime is 18620963. The next prime is 18620981. The reversal of 18620965 is 56902681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18620965 - 2¹ = 18620963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18620963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169227 + ... + 169336.

It is an arithmetic number, because the mean of its divisors is an integer number (3047076).

Almost surely, 2^18620965 is an apocalyptic number.

It is an amenable number.

18620965 is a deficient number, since it is larger than the sum of its proper divisors (5755643).

18620965 is a wasteful number, since it uses less digits than its factorization.

18620965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338579.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 18620965 is about 4315.2016175377. The cubic root of 18620965 is about 265.0538160550.

The spelling of 18620965 in words is "eighteen million, six hundred twenty thousand, nine hundred sixty-five".