19746064829 has 2 divisors, whose sum is σ = 19746064830. Its totient is φ = 19746064828.

The previous prime is 19746064777. The next prime is 19746064843. The reversal of 19746064829 is 92846064791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19668660025 + 77404804 = 140245^2 + 8798^2 .

It is a cyclic number.

It is not a de Polignac number, because 19746064829 - 2²⁰ = 19745016253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19746064889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9873032414 + 9873032415.

It is an arithmetic number, because the mean of its divisors is an integer number (9873032415).

Almost surely, 2^19746064829 is an apocalyptic number.

It is an amenable number.

19746064829 is a deficient number, since it is larger than the sum of its proper divisors (1).

19746064829 is an equidigital number, since it uses as much as digits as its factorization.

19746064829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 19746064829 in words is "nineteen billion, seven hundred forty-six million, sixty-four thousand, eight hundred twenty-nine".