18920075 has 12 divisors (see below), whose sum is σ = 24218688. Its totient is φ = 14647200.

The previous prime is 18920071. The next prime is 18920089. The reversal of 18920075 is 57002981.

It is not a de Polignac number, because 18920075 - 2² = 18920071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18920071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11432 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (2018224).

Almost surely, 2^18920075 is an apocalyptic number.

18920075 is a deficient number, since it is larger than the sum of its proper divisors (5298613).

18920075 is a wasteful number, since it uses less digits than its factorization.

18920075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24454 (or 24449 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 18920075 is about 4349.7212554370. The cubic root of 18920075 is about 266.4654775895.

The spelling of 18920075 in words is "eighteen million, nine hundred twenty thousand, seventy-five".