19386325129 has 2 divisors, whose sum is σ = 19386325130. Its totient is φ = 19386325128.

The previous prime is 19386325117. The next prime is 19386325201. The reversal of 19386325129 is 92152368391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16874010000 + 2512315129 = 129900^2 + 50123^2 .

It is a cyclic number.

It is not a de Polignac number, because 19386325129 - 2⁵ = 19386325097 is a prime.

It is not a weakly prime, because it can be changed into another prime (19386325529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9693162564 + 9693162565.

It is an arithmetic number, because the mean of its divisors is an integer number (9693162565).

Almost surely, 2^19386325129 is an apocalyptic number.

It is an amenable number.

19386325129 is a deficient number, since it is larger than the sum of its proper divisors (1).

19386325129 is an equidigital number, since it uses as much as digits as its factorization.

19386325129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 49.

The spelling of 19386325129 in words is "nineteen billion, three hundred eighty-six million, three hundred twenty-five thousand, one hundred twenty-nine".