195370657 has 2 divisors, whose sum is σ = 195370658. Its totient is φ = 195370656.

The previous prime is 195370639. The next prime is 195370687. The reversal of 195370657 is 756073591.

195370657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191988736 + 3381921 = 13856^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 195370657 - 2⁷ = 195370529 is a prime.

It is a super-2 number, since 2×195370657² = 76339387233223298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195370607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97685328 + 97685329.

It is an arithmetic number, because the mean of its divisors is an integer number (97685329).

Almost surely, 2^195370657 is an apocalyptic number.

It is an amenable number.

195370657 is a deficient number, since it is larger than the sum of its proper divisors (1).

195370657 is an equidigital number, since it uses as much as digits as its factorization.

195370657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 195370657 is about 13977.5053925942. The cubic root of 195370657 is about 580.2561858748.

The spelling of 195370657 in words is "one hundred ninety-five million, three hundred seventy thousand, six hundred fifty-seven".