18321552103 has 8 divisors (see below), whose sum is σ = 19406189088. Its totient is φ = 17237681664.

The previous prime is 18321552097. The next prime is 18321552121. The reversal of 18321552103 is 30125512381.

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 18321552103 - 2²⁵ = 18287997671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18321552133) 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, 142051 + ... + 238372.

It is an arithmetic number, because the mean of its divisors is an integer number (2425773636).

Almost surely, 2^18321552103 is an apocalyptic number.

18321552103 is a deficient number, since it is larger than the sum of its proper divisors (1084636985).

18321552103 is a wasteful number, since it uses less digits than its factorization.

18321552103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383273.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 18321552103 in words is "eighteen billion, three hundred twenty-one million, five hundred fifty-two thousand, one hundred three".