18706958928 has 180 divisors, whose sum is σ = 62866297728. Its totient is φ = 5172370560.

The previous prime is 18706958923. The next prime is 18706958929. The reversal of 18706958928 is 82985960781.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18706958923) 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 35 ways as a sum of consecutive naturals, for example, 175975 + ... + 261497.

Almost surely, 2^18706958928 is an apocalyptic number.

18706958928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18706958928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31433148864).

18706958928 is an abundant number, since it is smaller than the sum of its proper divisors (44159338800).

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

18706958928 is a wasteful number, since it uses less digits than its factorization.

18706958928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85582 (or 85566 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 18706958928 in words is "eighteen billion, seven hundred six million, nine hundred fifty-eight thousand, nine hundred twenty-eight".