195945651029 has 2 divisors, whose sum is σ = 195945651030. Its totient is φ = 195945651028.

The previous prime is 195945650993. The next prime is 195945651047. The reversal of 195945651029 is 920156549591.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161933808100 + 34011842929 = 402410^2 + 184423^2 .

It is an emirp because it is prime and its reverse (920156549591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195945651029 - 2⁸ = 195945650773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195945651829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97972825514 + 97972825515.

It is an arithmetic number, because the mean of its divisors is an integer number (97972825515).

Almost surely, 2^195945651029 is an apocalyptic number.

It is an amenable number.

195945651029 is a deficient number, since it is larger than the sum of its proper divisors (1).

195945651029 is an equidigital number, since it uses as much as digits as its factorization.

195945651029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374000, while the sum is 56.

The spelling of 195945651029 in words is "one hundred ninety-five billion, nine hundred forty-five million, six hundred fifty-one thousand, twenty-nine".