9133111961 has 2 divisors, whose sum is σ = 9133111962. Its totient is φ = 9133111960.

The previous prime is 9133111879. The next prime is 9133111997. The reversal of 9133111961 is 1691113319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8318352025 + 814759936 = 91205^2 + 28544^2 .

It is a cyclic number.

It is not a de Polignac number, because 9133111961 - 2²² = 9128917657 is a prime.

It is a super-2 number, since 2×9133111961² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9133111261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4566555980 + 4566555981.

It is an arithmetic number, because the mean of its divisors is an integer number (4566555981).

Almost surely, 2^9133111961 is an apocalyptic number.

It is an amenable number.

9133111961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9133111961 is an equidigital number, since it uses as much as digits as its factorization.

9133111961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 35.

The square root of 9133111961 is about 95567.3163848394. The cubic root of 9133111961 is about 2090.2886410262.

The spelling of 9133111961 in words is "nine billion, one hundred thirty-three million, one hundred eleven thousand, nine hundred sixty-one".