19892818088 has 64 divisors (see below), whose sum is σ = 43940171520. Its totient is φ = 8323718400.

The previous prime is 19892818027. The next prime is 19892818093. The reversal of 19892818088 is 88081829891.

It is a super-2 number, since 2×19892818088² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19892818088.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 396158 + ... + 443538.

It is an arithmetic number, because the mean of its divisors is an integer number (686565180).

Almost surely, 2^19892818088 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 19892818088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21970085760).

19892818088 is an abundant number, since it is smaller than the sum of its proper divisors (24047353432).

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

19892818088 is a wasteful number, since it uses less digits than its factorization.

19892818088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47778 (or 47774 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 62.

The spelling of 19892818088 in words is "nineteen billion, eight hundred ninety-two million, eight hundred eighteen thousand, eighty-eight".