195210151 has 2 divisors, whose sum is σ = 195210152. Its totient is φ = 195210150.

The previous prime is 195210149. The next prime is 195210163. The reversal of 195210151 is 151012591.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195210151 - 2¹ = 195210149 is a prime.

Together with 195210149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195210101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97605075 + 97605076.

It is an arithmetic number, because the mean of its divisors is an integer number (97605076).

Almost surely, 2^195210151 is an apocalyptic number.

195210151 is a deficient number, since it is larger than the sum of its proper divisors (1).

195210151 is an equidigital number, since it uses as much as digits as its factorization.

195210151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 25.

The square root of 195210151 is about 13971.7626303913. The cubic root of 195210151 is about 580.0972399389.

The spelling of 195210151 in words is "one hundred ninety-five million, two hundred ten thousand, one hundred fifty-one".