195481597 has 2 divisors, whose sum is σ = 195481598. Its totient is φ = 195481596.

The previous prime is 195481549. The next prime is 195481613. The reversal of 195481597 is 795184591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121418361 + 74063236 = 11019^2 + 8606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195481597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195481597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195487597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97740798 + 97740799.

It is an arithmetic number, because the mean of its divisors is an integer number (97740799).

Almost surely, 2^195481597 is an apocalyptic number.

It is an amenable number.

195481597 is a deficient number, since it is larger than the sum of its proper divisors (1).

195481597 is an equidigital number, since it uses as much as digits as its factorization.

195481597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 49.

The square root of 195481597 is about 13981.4733486854. The cubic root of 195481597 is about 580.3659967021.

The spelling of 195481597 in words is "one hundred ninety-five million, four hundred eighty-one thousand, five hundred ninety-seven".