18953128158 has 8 divisors (see below), whose sum is σ = 37906256328. Its totient is φ = 6317709384.

The previous prime is 18953128153. The next prime is 18953128171. The reversal of 18953128158 is 85182135981.

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

18953128158 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 18953128158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18953128153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579427341 + ... + 1579427352.

It is an arithmetic number, because the mean of its divisors is an integer number (4738282041).

Almost surely, 2^18953128158 is an apocalyptic number.

18953128158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18953128158 is a wasteful number, since it uses less digits than its factorization.

18953128158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158854698.

The product of its digits is 691200, while the sum is 51.

The spelling of 18953128158 in words is "eighteen billion, nine hundred fifty-three million, one hundred twenty-eight thousand, one hundred fifty-eight".