1136971961 has 2 divisors, whose sum is σ = 1136971962. Its totient is φ = 1136971960.

The previous prime is 1136971933. The next prime is 1136971963. The reversal of 1136971961 is 1691796311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 598731961 + 538240000 = 24469^2 + 23200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1136971961 - 2⁶ = 1136971897 is a prime.

It is a Sophie Germain prime.

Together with 1136971963, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1136971963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568485980 + 568485981.

It is an arithmetic number, because the mean of its divisors is an integer number (568485981).

Almost surely, 2^1136971961 is an apocalyptic number.

It is an amenable number.

1136971961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1136971961 is an equidigital number, since it uses as much as digits as its factorization.

1136971961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 44.

The square root of 1136971961 is about 33719.0148284317. The cubic root of 1136971961 is about 1043.7181878217.

The spelling of 1136971961 in words is "one billion, one hundred thirty-six million, nine hundred seventy-one thousand, nine hundred sixty-one".