18943259152 has 80 divisors (see below), whose sum is σ = 38185680960. Its totient is φ = 9097920000.

The previous prime is 18943259131. The next prime is 18943259161. The reversal of 18943259152 is 25195234981.

It is a junction number, because it is equal to n+sod(n) for n = 18943259096 and 18943259105.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12982999 + ... + 12984457.

It is an arithmetic number, because the mean of its divisors is an integer number (477321012).

Almost surely, 2^18943259152 is an apocalyptic number.

It is an amenable number.

18943259152 is an abundant number, since it is smaller than the sum of its proper divisors (19242421808).

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

18943259152 is a wasteful number, since it uses less digits than its factorization.

18943259152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1826 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

The spelling of 18943259152 in words is "eighteen billion, nine hundred forty-three million, two hundred fifty-nine thousand, one hundred fifty-two".