1961000137 has 2 divisors, whose sum is σ = 1961000138. Its totient is φ = 1961000136.

The previous prime is 1961000117. The next prime is 1961000141. The reversal of 1961000137 is 7310001691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1702305081 + 258695056 = 41259^2 + 16084^2 .

It is an emirp because it is prime and its reverse (7310001691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1961000137 - 2²⁷ = 1826782409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1961000117) 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, 980500068 + 980500069.

It is an arithmetic number, because the mean of its divisors is an integer number (980500069).

Almost surely, 2^1961000137 is an apocalyptic number.

It is an amenable number.

1961000137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961000137 is an equidigital number, since it uses as much as digits as its factorization.

1961000137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1961000137 is about 44283.1811978318. The cubic root of 1961000137 is about 1251.6777762726.

The spelling of 1961000137 in words is "one billion, nine hundred sixty-one million, one hundred thirty-seven", and thus it is an aban number.