18628468830 has 128 divisors (see below), whose sum is σ = 50116060800. Its totient is φ = 4923804672.

The previous prime is 18628468801. The next prime is 18628468853. The reversal of 18628468830 is 3886482681.

18628468830 is a `hidden beast` number, since 1 + 8 + 628 + 4 + 6 + 8 + 8 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17425536 + ... + 17426604.

It is an arithmetic number, because the mean of its divisors is an integer number (391531725).

Almost surely, 2^18628468830 is an apocalyptic number.

18628468830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18628468830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25058030400).

18628468830 is an abundant number, since it is smaller than the sum of its proper divisors (31487591970).

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

18628468830 is a wasteful number, since it uses less digits than its factorization.

18628468830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

The spelling of 18628468830 in words is "eighteen billion, six hundred twenty-eight million, four hundred sixty-eight thousand, eight hundred thirty".