1140891013 has 2 divisors, whose sum is σ = 1140891014. Its totient is φ = 1140891012.

The previous prime is 1140890987. The next prime is 1140891161. The reversal of 1140891013 is 3101980411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012703329 + 128187684 = 31823^2 + 11322^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140891013 - 2⁵ = 1140890981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140871013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570445506 + 570445507.

It is an arithmetic number, because the mean of its divisors is an integer number (570445507).

Almost surely, 2^1140891013 is an apocalyptic number.

It is an amenable number.

1140891013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140891013 is an equidigital number, since it uses as much as digits as its factorization.

1140891013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1140891013 is about 33777.0782188158. The cubic root of 1140891013 is about 1044.9160171513.

The spelling of 1140891013 in words is "one billion, one hundred forty million, eight hundred ninety-one thousand, thirteen".