195457357 has 2 divisors, whose sum is σ = 195457358. Its totient is φ = 195457356.

The previous prime is 195457309. The next prime is 195457363. The reversal of 195457357 is 753754591.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174398436 + 21058921 = 13206^2 + 4589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195457357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195457397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97728678 + 97728679.

It is an arithmetic number, because the mean of its divisors is an integer number (97728679).

Almost surely, 2^195457357 is an apocalyptic number.

It is an amenable number.

195457357 is a deficient number, since it is larger than the sum of its proper divisors (1).

195457357 is an equidigital number, since it uses as much as digits as its factorization.

195457357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 661500, while the sum is 46.

The square root of 195457357 is about 13980.6064603793. The cubic root of 195457357 is about 580.3420069702.

The spelling of 195457357 in words is "one hundred ninety-five million, four hundred fifty-seven thousand, three hundred fifty-seven".