819788998084 has 45 divisors (see below), whose sum is σ = 1673817454127. Its totient is φ = 351300114312.

The previous prime is 819788998019. The next prime is 819788998109. The reversal of 819788998084 is 480899887918.

The square root of 819788998084 is 905422.

It is a perfect power (a square), and thus also a powerful number.

It is a junction number, because it is equal to n+sod(n) for n = 819788997995 and 819788998013.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 88726737 + ... + 88735975.

Almost surely, 2^819788998084 is an apocalyptic number.

819788998084 is the 905422-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 819788998084

819788998084 is an abundant number, since it is smaller than the sum of its proper divisors (854028456043).

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

819788998084 is an frugal number, since it uses more digits than its factorization.

819788998084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510 (or 9248 counting only the distinct ones).

The product of its (nonzero) digits is 668860416, while the sum is 79.

The spelling of 819788998084 in words is "eight hundred nineteen billion, seven hundred eighty-eight million, nine hundred ninety-eight thousand, eighty-four".