18790797312 has 728 divisors, whose sum is σ = 68757219840. Its totient is φ = 5016453120.

The previous prime is 18790797269. The next prime is 18790797313. The reversal of 18790797312 is 21379709781.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18790797313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 606154737 + ... + 606154767.

Almost surely, 2^18790797312 is an apocalyptic number.

18790797312 is a gapful number since it is divisible by the number (12) 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 18790797312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34378609920).

18790797312 is an abundant number, since it is smaller than the sum of its proper divisors (49966422528).

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

18790797312 is an frugal number, since it uses more digits than its factorization.

18790797312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The spelling of 18790797312 in words is "eighteen billion, seven hundred ninety million, seven hundred ninety-seven thousand, three hundred twelve".