19969246838 has 8 divisors (see below), whose sum is σ = 30763434432. Its totient is φ = 9714768696.

The previous prime is 19969246831. The next prime is 19969246853. The reversal of 19969246838 is 83864296991.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19969246831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134927270 + ... + 134927417.

It is an arithmetic number, because the mean of its divisors is an integer number (3845429304).

Almost surely, 2^19969246838 is an apocalyptic number.

19969246838 is a deficient number, since it is larger than the sum of its proper divisors (10794187594).

19969246838 is a wasteful number, since it uses less digits than its factorization.

19969246838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269854726.

The product of its digits is 40310784, while the sum is 65.

The spelling of 19969246838 in words is "nineteen billion, nine hundred sixty-nine million, two hundred forty-six thousand, eight hundred thirty-eight".