19746064793 has 16 divisors (see below), whose sum is σ = 24359024256. Its totient is φ = 15587147520.

The previous prime is 19746064777. The next prime is 19746064829. The reversal of 19746064793 is 39746064791.

It is not a de Polignac number, because 19746064793 - 2⁴ = 19746064777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19746064493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211163 + ... + 289968.

It is an arithmetic number, because the mean of its divisors is an integer number (1522439016).

Almost surely, 2^19746064793 is an apocalyptic number.

19746064793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19746064793 is a deficient number, since it is larger than the sum of its proper divisors (4612959463).

19746064793 is a wasteful number, since it uses less digits than its factorization.

19746064793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501584.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 19746064793 in words is "nineteen billion, seven hundred forty-six million, sixty-four thousand, seven hundred ninety-three".