195149107 has 2 divisors, whose sum is σ = 195149108. Its totient is φ = 195149106.

The previous prime is 195149099. The next prime is 195149111. The reversal of 195149107 is 701941591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195149107 - 2³ = 195149099 is a prime.

It is not a weakly prime, because it can be changed into another prime (195149117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97574553 + 97574554.

It is an arithmetic number, because the mean of its divisors is an integer number (97574554).

Almost surely, 2^195149107 is an apocalyptic number.

195149107 is a deficient number, since it is larger than the sum of its proper divisors (1).

195149107 is an equidigital number, since it uses as much as digits as its factorization.

195149107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 195149107 is about 13969.5779105884. The cubic root of 195149107 is about 580.0367663970.

The spelling of 195149107 in words is "one hundred ninety-five million, one hundred forty-nine thousand, one hundred seven".