19706307944 has 32 divisors (see below), whose sum is σ = 37760448000. Its totient is φ = 9639145152.

The previous prime is 19706307923. The next prime is 19706307947. The reversal of 19706307944 is 44970360791.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19706307892 and 19706307901.

It is not an unprimeable number, because it can be changed into a prime (19706307947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74144 + ... + 211919.

It is an arithmetic number, because the mean of its divisors is an integer number (1180014000).

Almost surely, 2^19706307944 is an apocalyptic number.

It is an amenable number.

19706307944 is a deficient number, since it is larger than the sum of its proper divisors (18054140056).

19706307944 is a wasteful number, since it uses less digits than its factorization.

19706307944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286257 (or 286253 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 19706307944 in words is "nineteen billion, seven hundred six million, three hundred seven thousand, nine hundred forty-four".