19469297161 has 2 divisors, whose sum is σ = 19469297162. Its totient is φ = 19469297160.

The previous prime is 19469297153. The next prime is 19469297213. The reversal of 19469297161 is 16179296491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18534099600 + 935197561 = 136140^2 + 30581^2 .

It is a cyclic number.

It is not a de Polignac number, because 19469297161 - 2³ = 19469297153 is a prime.

It is not a weakly prime, because it can be changed into another prime (19469297101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9734648580 + 9734648581.

It is an arithmetic number, because the mean of its divisors is an integer number (9734648581).

Almost surely, 2^19469297161 is an apocalyptic number.

It is an amenable number.

19469297161 is a deficient number, since it is larger than the sum of its proper divisors (1).

19469297161 is an equidigital number, since it uses as much as digits as its factorization.

19469297161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 55.

The spelling of 19469297161 in words is "nineteen billion, four hundred sixty-nine million, two hundred ninety-seven thousand, one hundred sixty-one".