195065902019 has 2 divisors, whose sum is σ = 195065902020. Its totient is φ = 195065902018.

The previous prime is 195065901983. The next prime is 195065902039. The reversal of 195065902019 is 910209560591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195065902019 - 2²⁰ = 195064853443 is a prime.

It is a super-2 number, since 2×195065902019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195065902039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97532951009 + 97532951010.

It is an arithmetic number, because the mean of its divisors is an integer number (97532951010).

Almost surely, 2^195065902019 is an apocalyptic number.

195065902019 is a deficient number, since it is larger than the sum of its proper divisors (1).

195065902019 is an equidigital number, since it uses as much as digits as its factorization.

195065902019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 218700, while the sum is 47.

The spelling of 195065902019 in words is "one hundred ninety-five billion, sixty-five million, nine hundred two thousand, nineteen".