18895645 has 8 divisors (see below), whose sum is σ = 23157504. Its totient is φ = 14794704.

The previous prime is 18895631. The next prime is 18895651. The reversal of 18895645 is 54659881.

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 18895645 - 2¹⁹ = 18371357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18895595 and 18895604.

It is a congruent number.

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, 39969 + ... + 40438.

It is an arithmetic number, because the mean of its divisors is an integer number (2894688).

Almost surely, 2^18895645 is an apocalyptic number.

It is an amenable number.

18895645 is a deficient number, since it is larger than the sum of its proper divisors (4261859).

18895645 is an equidigital number, since it uses as much as digits as its factorization.

18895645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80459.

The product of its digits is 345600, while the sum is 46.

The square root of 18895645 is about 4346.9121224152. The cubic root of 18895645 is about 266.3507395759.

The spelling of 18895645 in words is "eighteen million, eight hundred ninety-five thousand, six hundred forty-five".