18079975 has 24 divisors (see below), whose sum is σ = 23748480. Its totient is φ = 13632000.

The previous prime is 18079969. The next prime is 18079979. The reversal of 18079975 is 57997081.

It is not a de Polignac number, because 18079975 - 2³ = 18079967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18079979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31491 + ... + 32059.

It is an arithmetic number, because the mean of its divisors is an integer number (989520).

Almost surely, 2^18079975 is an apocalyptic number.

18079975 is a deficient number, since it is larger than the sum of its proper divisors (5668505).

18079975 is a wasteful number, since it uses less digits than its factorization.

18079975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 18079975 is about 4252.0553853401. The cubic root of 18079975 is about 262.4617026517.

The spelling of 18079975 in words is "eighteen million, seventy-nine thousand, nine hundred seventy-five".