19769763138 has 8 divisors (see below), whose sum is σ = 39539526288. Its totient is φ = 6589921044.

The previous prime is 19769763113. The next prime is 19769763157. The reversal of 19769763138 is 83136796791.

It is a sphenic number, since it is the product of 3 distinct primes.

19769763138 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1647480256 + ... + 1647480267.

It is an arithmetic number, because the mean of its divisors is an integer number (4942440786).

Almost surely, 2^19769763138 is an apocalyptic number.

19769763138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19769763138 is a wasteful number, since it uses less digits than its factorization.

19769763138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294960528.

The product of its digits is 10287648, while the sum is 60.

The spelling of 19769763138 in words is "nineteen billion, seven hundred sixty-nine million, seven hundred sixty-three thousand, one hundred thirty-eight".