199038605137 has 2 divisors, whose sum is σ = 199038605138. Its totient is φ = 199038605136.

The previous prime is 199038605107. The next prime is 199038605147. The reversal of 199038605137 is 731506830991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199037330496 + 1274641 = 446136^2 + 1129^2 .

It is a cyclic number.

It is not a de Polignac number, because 199038605137 - 2³⁵ = 164678866769 is a prime.

It is not a weakly prime, because it can be changed into another prime (199038605107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99519302568 + 99519302569.

It is an arithmetic number, because the mean of its divisors is an integer number (99519302569).

Almost surely, 2^199038605137 is an apocalyptic number.

It is an amenable number.

199038605137 is a deficient number, since it is larger than the sum of its proper divisors (1).

199038605137 is an equidigital number, since it uses as much as digits as its factorization.

199038605137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 199038605137 in words is "one hundred ninety-nine billion, thirty-eight million, six hundred five thousand, one hundred thirty-seven".