195134689 has 2 divisors, whose sum is σ = 195134690. Its totient is φ = 195134688.

The previous prime is 195134663. The next prime is 195134729. The reversal of 195134689 is 986431591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195077089 + 57600 = 13967^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 195134689 - 2¹⁹ = 194610401 is a prime.

It is a super-2 number, since 2×195134689² = 76155093702253442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195134629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97567344 + 97567345.

It is an arithmetic number, because the mean of its divisors is an integer number (97567345).

Almost surely, 2^195134689 is an apocalyptic number.

It is an amenable number.

195134689 is a deficient number, since it is larger than the sum of its proper divisors (1).

195134689 is an equidigital number, since it uses as much as digits as its factorization.

195134689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 195134689 is about 13969.0618511051. The cubic root of 195134689 is about 580.0224812927.

The spelling of 195134689 in words is "one hundred ninety-five million, one hundred thirty-four thousand, six hundred eighty-nine".