19692136448 has 192 divisors, whose sum is σ = 42664527360. Its totient is φ = 9068544000.

The previous prime is 19692136433. The next prime is 19692136463. The reversal of 19692136448 is 84463129691.

It is an interprime number because it is at equal distance from previous prime (19692136433) and next prime (19692136463).

It is a self number, because there is not a number n which added to its sum of digits gives 19692136448.

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, 194971598 + ... + 194971698.

It is an arithmetic number, because the mean of its divisors is an integer number (222211080).

Almost surely, 2^19692136448 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 19692136448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21332263680).

19692136448 is an abundant number, since it is smaller than the sum of its proper divisors (22972390912).

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

19692136448 is a wasteful number, since it uses less digits than its factorization.

19692136448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 254 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The spelling of 19692136448 in words is "nineteen billion, six hundred ninety-two million, one hundred thirty-six thousand, four hundred forty-eight".