195538751 has 2 divisors, whose sum is σ = 195538752. Its totient is φ = 195538750.

The previous prime is 195538723. The next prime is 195538769. The reversal of 195538751 is 157835591.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195538751 - 2⁶ = 195538687 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195538771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97769375 + 97769376.

It is an arithmetic number, because the mean of its divisors is an integer number (97769376).

Almost surely, 2^195538751 is an apocalyptic number.

195538751 is a deficient number, since it is larger than the sum of its proper divisors (1).

195538751 is an equidigital number, since it uses as much as digits as its factorization.

195538751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 44.

The square root of 195538751 is about 13983.5171183791. The cubic root of 195538751 is about 580.4225527607.

The spelling of 195538751 in words is "one hundred ninety-five million, five hundred thirty-eight thousand, seven hundred fifty-one".