18085548153 has 4 divisors (see below), whose sum is σ = 24114064208. Its totient is φ = 12057032100.

The previous prime is 18085548127. The next prime is 18085548179. The reversal of 18085548153 is 35184558081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (18085548127) and next prime (18085548179).

It is not a de Polignac number, because 18085548153 - 2²⁰ = 18084499577 is a prime.

It is a super-2 number, since 2×18085548153² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18085548113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014258023 + ... + 3014258028.

It is an arithmetic number, because the mean of its divisors is an integer number (6028516052).

Almost surely, 2^18085548153 is an apocalyptic number.

It is an amenable number.

18085548153 is a deficient number, since it is larger than the sum of its proper divisors (6028516055).

18085548153 is an equidigital number, since it uses as much as digits as its factorization.

18085548153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028516054.

The product of its (nonzero) digits is 768000, while the sum is 48.

The spelling of 18085548153 in words is "eighteen billion, eighty-five million, five hundred forty-eight thousand, one hundred fifty-three".