18493375 has 16 divisors (see below), whose sum is σ = 23227776. Its totient is φ = 14700000.

The previous prime is 18493369. The next prime is 18493379. The reversal of 18493375 is 57339481.

It is a de Polignac number, because none of the positive numbers 2^k-18493375 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18493379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24250 + ... + 25000.

It is an arithmetic number, because the mean of its divisors is an integer number (1451736).

Almost surely, 2^18493375 is an apocalyptic number.

18493375 is a deficient number, since it is larger than the sum of its proper divisors (4734401).

18493375 is an equidigital number, since it uses as much as digits as its factorization.

18493375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 953 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 18493375 is about 4300.3924239539. The cubic root of 18493375 is about 264.4470492189.

The spelling of 18493375 in words is "eighteen million, four hundred ninety-three thousand, three hundred seventy-five".