19742907316 has 24 divisors (see below), whose sum is σ = 37899257760. Its totient is φ = 8924464800.

The previous prime is 19742907271. The next prime is 19742907323. The reversal of 19742907316 is 61370924791.

It is a self number, because there is not a number n which added to its sum of digits gives 19742907316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231546 + ... + 1247473.

It is an arithmetic number, because the mean of its divisors is an integer number (1579135740).

Almost surely, 2^19742907316 is an apocalyptic number.

It is an amenable number.

19742907316 is a deficient number, since it is larger than the sum of its proper divisors (18156350444).

19742907316 is a wasteful number, since it uses less digits than its factorization.

19742907316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479215 (or 2479213 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 19742907316 in words is "nineteen billion, seven hundred forty-two million, nine hundred seven thousand, three hundred sixteen".