18795645 has 40 divisors (see below), whose sum is σ = 36764640. Its totient is φ = 9110880.

The previous prime is 18795631. The next prime is 18795649. The reversal of 18795645 is 54659781.

18795645 is a `hidden beast` number, since 1 + 87 + 9 + 564 + 5 = 666.

It is not a de Polignac number, because 18795645 - 2⁵ = 18795613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18795645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18795649) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2346 + ... + 6564.

It is an arithmetic number, because the mean of its divisors is an integer number (919116).

Almost surely, 2^18795645 is an apocalyptic number.

18795645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18795645 is a deficient number, since it is larger than the sum of its proper divisors (17968995).

18795645 is a wasteful number, since it uses less digits than its factorization.

18795645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247 (or 4238 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 18795645 is about 4335.3944457223. The cubic root of 18795645 is about 265.8800455992.

The spelling of 18795645 in words is "eighteen million, seven hundred ninety-five thousand, six hundred forty-five".