18489375 has 60 divisors (see below), whose sum is σ = 35332440. Its totient is φ = 9288000.

The previous prime is 18489349. The next prime is 18489379. The reversal of 18489375 is 57398481.

It is not a de Polignac number, because 18489375 - 2⁶ = 18489311 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 18489375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18489379) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 106789 + ... + 106961.

It is an arithmetic number, because the mean of its divisors is an integer number (588874).

Almost surely, 2^18489375 is an apocalyptic number.

18489375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18489375 is a deficient number, since it is larger than the sum of its proper divisors (16843065).

18489375 is a wasteful number, since it uses less digits than its factorization.

18489375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 200 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 18489375 is about 4299.9273249672. The cubic root of 18489375 is about 264.4279817696.

The spelling of 18489375 in words is "eighteen million, four hundred eighty-nine thousand, three hundred seventy-five".