18012975 has 12 divisors (see below), whose sum is σ = 29781576. Its totient is φ = 9606880.

The previous prime is 18012971. The next prime is 18012983. The reversal of 18012975 is 57921081.

It is not a de Polignac number, because 18012975 - 2² = 18012971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18012971) 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, 120012 + ... + 120161.

It is an arithmetic number, because the mean of its divisors is an integer number (2481798).

Almost surely, 2^18012975 is an apocalyptic number.

18012975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18012975 is a deficient number, since it is larger than the sum of its proper divisors (11768601).

18012975 is a wasteful number, since it uses less digits than its factorization.

18012975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240186 (or 240181 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 18012975 is about 4244.1695300730. The cubic root of 18012975 is about 262.1370948883.

The spelling of 18012975 in words is "eighteen million, twelve thousand, nine hundred seventy-five".