19862956129 has 2 divisors, whose sum is σ = 19862956130. Its totient is φ = 19862956128.

The previous prime is 19862956093. The next prime is 19862956153. The reversal of 19862956129 is 92165926891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11825475025 + 8037481104 = 108745^2 + 89652^2 .

It is a cyclic number.

It is not a de Polignac number, because 19862956129 - 2¹¹ = 19862954081 is a prime.

It is not a weakly prime, because it can be changed into another prime (19862956189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9931478064 + 9931478065.

It is an arithmetic number, because the mean of its divisors is an integer number (9931478065).

Almost surely, 2^19862956129 is an apocalyptic number.

It is an amenable number.

19862956129 is a deficient number, since it is larger than the sum of its proper divisors (1).

19862956129 is an equidigital number, since it uses as much as digits as its factorization.

19862956129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 58.

The spelling of 19862956129 in words is "nineteen billion, eight hundred sixty-two million, nine hundred fifty-six thousand, one hundred twenty-nine".