18138153 has 8 divisors (see below), whose sum is σ = 26382816. Its totient is φ = 10992800.

The previous prime is 18138149. The next prime is 18138161. The reversal of 18138153 is 35183181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18138153 - 2² = 18138149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18138153.

It is not an unprimeable number, because it can be changed into a prime (18138143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274788 + ... + 274853.

It is an arithmetic number, because the mean of its divisors is an integer number (3297852).

Almost surely, 2^18138153 is an apocalyptic number.

It is an amenable number.

18138153 is a deficient number, since it is larger than the sum of its proper divisors (8244663).

18138153 is a wasteful number, since it uses less digits than its factorization.

18138153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549655.

The product of its digits is 2880, while the sum is 30.

The square root of 18138153 is about 4258.8910528446. The cubic root of 18138153 is about 262.7429188964.

It can be divided in two parts, 1813815 and 3, that multiplied together give a palindrome (5441445).

The spelling of 18138153 in words is "eighteen million, one hundred thirty-eight thousand, one hundred fifty-three".