19746009896 has 8 divisors (see below), whose sum is σ = 37023768570. Its totient is φ = 9873004944.

The previous prime is 19746009893. The next prime is 19746009917. The reversal of 19746009896 is 69890064791.

It can be written as a sum of positive squares in only one way, i.e., 12052965796 + 7693044100 = 109786^2 + 87710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (19746009893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1234125611 + ... + 1234125626.

Almost surely, 2^19746009896 is an apocalyptic number.

It is an amenable number.

19746009896 is a deficient number, since it is larger than the sum of its proper divisors (17277758674).

19746009896 is a wasteful number, since it uses less digits than its factorization.

19746009896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468251243 (or 2468251239 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 19746009896 in words is "nineteen billion, seven hundred forty-six million, nine thousand, eight hundred ninety-six".