18012075 has 24 divisors (see below), whose sum is σ = 30014448. Its totient is φ = 9530880.

The previous prime is 18012073. The next prime is 18012083. The reversal of 18012075 is 57021081.

It is not a de Polignac number, because 18012075 - 2¹ = 18012073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18012073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9399 + ... + 11151.

It is an arithmetic number, because the mean of its divisors is an integer number (1250602).

Almost surely, 2^18012075 is an apocalyptic number.

18012075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18012075 is a deficient number, since it is larger than the sum of its proper divisors (12002373).

18012075 is a wasteful number, since it uses less digits than its factorization.

18012075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 18012075 is about 4244.0635009387. The cubic root of 18012075 is about 262.1327290111.

The spelling of 18012075 in words is "eighteen million, twelve thousand, seventy-five".