18953249588 has 288 divisors, whose sum is σ = 46032215040. Its totient is φ = 6740858880.

The previous prime is 18953249443. The next prime is 18953249611. The reversal of 18953249588 is 88594235981.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 18953249588.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 109556270 + ... + 109556442.

It is an arithmetic number, because the mean of its divisors is an integer number (159834080).

Almost surely, 2^18953249588 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18953249588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23016107520).

18953249588 is an abundant number, since it is smaller than the sum of its proper divisors (27078965452).

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

18953249588 is a wasteful number, since it uses less digits than its factorization.

18953249588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 318 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 62.

The spelling of 18953249588 in words is "eighteen billion, nine hundred fifty-three million, two hundred forty-nine thousand, five hundred eighty-eight".