18768375 has 64 divisors (see below), whose sum is σ = 35642880. Its totient is φ = 9741600.

The previous prime is 18768367. The next prime is 18768377. The reversal of 18768375 is 57386781.

It is not a de Polignac number, because 18768375 - 2³ = 18768367 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 18768375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18768377) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226084 + ... + 226166.

It is an arithmetic number, because the mean of its divisors is an integer number (556920).

Almost surely, 2^18768375 is an apocalyptic number.

18768375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18768375 is a deficient number, since it is larger than the sum of its proper divisors (16874505).

18768375 is an equidigital number, since it uses as much as digits as its factorization.

18768375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 158 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 18768375 is about 4332.2482615843. The cubic root of 18768375 is about 265.7513977449.

The spelling of 18768375 in words is "eighteen million, seven hundred sixty-eight thousand, three hundred seventy-five".