195690037 has 2 divisors, whose sum is σ = 195690038. Its totient is φ = 195690036.

The previous prime is 195690029. The next prime is 195690083. The reversal of 195690037 is 730096591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129982801 + 65707236 = 11401^2 + 8106^2 .

It is a cyclic number.

It is not a de Polignac number, because 195690037 - 2³ = 195690029 is a prime.

It is a super-2 number, since 2×195690037² = 76589181162122738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195690097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97845018 + 97845019.

It is an arithmetic number, because the mean of its divisors is an integer number (97845019).

Almost surely, 2^195690037 is an apocalyptic number.

It is an amenable number.

195690037 is a deficient number, since it is larger than the sum of its proper divisors (1).

195690037 is an equidigital number, since it uses as much as digits as its factorization.

195690037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 195690037 is about 13988.9255127047. The cubic root of 195690037 is about 580.5722028425.

The spelling of 195690037 in words is "one hundred ninety-five million, six hundred ninety thousand, thirty-seven".