1131642913 has 2 divisors, whose sum is σ = 1131642914. Its totient is φ = 1131642912.

The previous prime is 1131642887. The next prime is 1131642917. The reversal of 1131642913 is 3192461311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009142289 + 122500624 = 31767^2 + 11068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131642913 - 2⁵ = 1131642881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131642917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565821456 + 565821457.

It is an arithmetic number, because the mean of its divisors is an integer number (565821457).

Almost surely, 2^1131642913 is an apocalyptic number.

It is an amenable number.

1131642913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131642913 is an equidigital number, since it uses as much as digits as its factorization.

1131642913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 1131642913 is about 33639.9006092468. The cubic root of 1131642913 is about 1042.0849793095.

The spelling of 1131642913 in words is "one billion, one hundred thirty-one million, six hundred forty-two thousand, nine hundred thirteen".