195230692819 has 2 divisors, whose sum is σ = 195230692820. Its totient is φ = 195230692818.

The previous prime is 195230692763. The next prime is 195230692843. The reversal of 195230692819 is 918296032591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195230692819 is a prime.

It is a super-2 number, since 2×195230692819² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195230692819.

It is not a weakly prime, because it can be changed into another prime (195230692879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97615346409 + 97615346410.

It is an arithmetic number, because the mean of its divisors is an integer number (97615346410).

Almost surely, 2^195230692819 is an apocalyptic number.

195230692819 is a deficient number, since it is larger than the sum of its proper divisors (1).

195230692819 is an equidigital number, since it uses as much as digits as its factorization.

195230692819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 195230692819 in words is "one hundred ninety-five billion, two hundred thirty million, six hundred ninety-two thousand, eight hundred nineteen".