195525919 has 2 divisors, whose sum is σ = 195525920. Its totient is φ = 195525918.

The previous prime is 195525881. The next prime is 195525929. The reversal of 195525919 is 919525591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195525919 - 2¹¹ = 195523871 is a prime.

It is a super-2 number, since 2×195525919² = 76460770001589122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195525929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97762959 + 97762960.

It is an arithmetic number, because the mean of its divisors is an integer number (97762960).

Almost surely, 2^195525919 is an apocalyptic number.

195525919 is a deficient number, since it is larger than the sum of its proper divisors (1).

195525919 is an equidigital number, since it uses as much as digits as its factorization.

195525919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182250, while the sum is 46.

The square root of 195525919 is about 13983.0582849390. The cubic root of 195525919 is about 580.4098559677.

The spelling of 195525919 in words is "one hundred ninety-five million, five hundred twenty-five thousand, nine hundred nineteen".