18000153 has 12 divisors (see below), whose sum is σ = 26389168. Its totient is φ = 11820600.

The previous prime is 18000149. The next prime is 18000209. The reversal of 18000153 is 35100081.

It is a happy number.

It is not a de Polignac number, because 18000153 - 2² = 18000149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18001153) 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, 14323 + ... + 15528.

Almost surely, 2^18000153 is an apocalyptic number.

It is an amenable number.

18000153 is a deficient number, since it is larger than the sum of its proper divisors (8389015).

18000153 is a wasteful number, since it uses less digits than its factorization.

18000153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29924 (or 29921 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 18000153 is about 4242.6587183039. The cubic root of 18000153 is about 262.0748819622.

It can be divided in two parts, 1800015 and 3, that multiplied together give a palindrome (5400045).

The spelling of 18000153 in words is "eighteen million, one hundred fifty-three", and thus it is an aban number.