18775989232 has 240 divisors, whose sum is σ = 50713896960. Its totient is φ = 6532531200.

The previous prime is 18775989223. The next prime is 18775989277. The reversal of 18775989232 is 23298957781.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 6452994 + ... + 6455902.

It is an arithmetic number, because the mean of its divisors is an integer number (211307904).

Almost surely, 2^18775989232 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 18775989232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25356948480).

18775989232 is an abundant number, since it is smaller than the sum of its proper divisors (31937907728).

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

18775989232 is a wasteful number, since it uses less digits than its factorization.

18775989232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992 (or 2973 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 61.

The spelling of 18775989232 in words is "eighteen billion, seven hundred seventy-five million, nine hundred eighty-nine thousand, two hundred thirty-two".