1131963461 has 2 divisors, whose sum is σ = 1131963462. Its totient is φ = 1131963460.

The previous prime is 1131963451. The next prime is 1131963487. The reversal of 1131963461 is 1643691311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 946731361 + 185232100 = 30769^2 + 13610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131963461 - 2¹⁰ = 1131962437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131963401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565981730 + 565981731.

It is an arithmetic number, because the mean of its divisors is an integer number (565981731).

Almost surely, 2^1131963461 is an apocalyptic number.

It is an amenable number.

1131963461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131963461 is an equidigital number, since it uses as much as digits as its factorization.

1131963461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 1131963461 is about 33644.6646736150. The cubic root of 1131963461 is about 1042.1833633248.

The spelling of 1131963461 in words is "one billion, one hundred thirty-one million, nine hundred sixty-three thousand, four hundred sixty-one".