195970757 has 4 divisors (see below), whose sum is σ = 196029996. Its totient is φ = 195911520.

The previous prime is 195970751. The next prime is 195970783. The reversal of 195970757 is 757079591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 757079591 = 157 ⋅4822163.

It can be written as a sum of positive squares in 2 ways, for example, as 193043236 + 2927521 = 13894^2 + 1711^2 .

It is a cyclic number.

It is not a de Polignac number, because 195970757 - 2⁸ = 195970501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195970751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24344 + ... + 31377.

It is an arithmetic number, because the mean of its divisors is an integer number (49007499).

Almost surely, 2^195970757 is an apocalyptic number.

It is an amenable number.

195970757 is a deficient number, since it is larger than the sum of its proper divisors (59239).

195970757 is an equidigital number, since it uses as much as digits as its factorization.

195970757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59238.

The product of its (nonzero) digits is 694575, while the sum is 50.

The square root of 195970757 is about 13998.9555681844. The cubic root of 195970757 is about 580.8496830894.

The spelling of 195970757 in words is "one hundred ninety-five million, nine hundred seventy thousand, seven hundred fifty-seven".