195031937 has 2 divisors, whose sum is σ = 195031938. Its totient is φ = 195031936.

The previous prime is 195031933. The next prime is 195032021. The reversal of 195031937 is 739130591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133079296 + 61952641 = 11536^2 + 7871^2 .

It is a cyclic number.

It is not a de Polignac number, because 195031937 - 2² = 195031933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195031937.

It is not a weakly prime, because it can be changed into another prime (195031933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97515968 + 97515969.

It is an arithmetic number, because the mean of its divisors is an integer number (97515969).

Almost surely, 2^195031937 is an apocalyptic number.

It is an amenable number.

195031937 is a deficient number, since it is larger than the sum of its proper divisors (1).

195031937 is an equidigital number, since it uses as much as digits as its factorization.

195031937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 195031937 is about 13965.3835249878. The cubic root of 195031937 is about 579.9206560111.

The spelling of 195031937 in words is "one hundred ninety-five million, thirty-one thousand, nine hundred thirty-seven".