195129061 has 2 divisors, whose sum is σ = 195129062. Its totient is φ = 195129060.

The previous prime is 195129047. The next prime is 195129133. The reversal of 195129061 is 160921591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193488100 + 1640961 = 13910^2 + 1281^2 .

It is an emirp because it is prime and its reverse (160921591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195129061 - 2¹⁷ = 194997989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195129001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97564530 + 97564531.

It is an arithmetic number, because the mean of its divisors is an integer number (97564531).

Almost surely, 2^195129061 is an apocalyptic number.

It is an amenable number.

195129061 is a deficient number, since it is larger than the sum of its proper divisors (1).

195129061 is an equidigital number, since it uses as much as digits as its factorization.

195129061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 34.

The square root of 195129061 is about 13968.8604044854. The cubic root of 195129061 is about 580.0169049770.

The spelling of 195129061 in words is "one hundred ninety-five million, one hundred twenty-nine thousand, sixty-one".