195253973 has 2 divisors, whose sum is σ = 195253974. Its totient is φ = 195253972.

The previous prime is 195253963. The next prime is 195253979. The reversal of 195253973 is 379352591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159946609 + 35307364 = 12647^2 + 5942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195253973 is a prime.

It is a super-2 number, since 2×195253973² = 76248227944569458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195253979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97626986 + 97626987.

It is an arithmetic number, because the mean of its divisors is an integer number (97626987).

Almost surely, 2^195253973 is an apocalyptic number.

It is an amenable number.

195253973 is a deficient number, since it is larger than the sum of its proper divisors (1).

195253973 is an equidigital number, since it uses as much as digits as its factorization.

195253973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 255150, while the sum is 44.

The square root of 195253973 is about 13973.3307768764. The cubic root of 195253973 is about 580.1406446477.

The spelling of 195253973 in words is "one hundred ninety-five million, two hundred fifty-three thousand, nine hundred seventy-three".