18152993558 has 16 divisors (see below), whose sum is σ = 31179160224. Its totient is φ = 7764918720.

The previous prime is 18152993557. The next prime is 18152993569. The reversal of 18152993558 is 85539925181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18152993557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1237085 + ... + 1251672.

It is an arithmetic number, because the mean of its divisors is an integer number (1948697514).

Almost surely, 2^18152993558 is an apocalyptic number.

18152993558 is a deficient number, since it is larger than the sum of its proper divisors (13026166666).

18152993558 is a wasteful number, since it uses less digits than its factorization.

18152993558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489287.

The product of its digits is 3888000, while the sum is 56.

The spelling of 18152993558 in words is "eighteen billion, one hundred fifty-two million, nine hundred ninety-three thousand, five hundred fifty-eight".