1133841581 has 2 divisors, whose sum is σ = 1133841582. Its totient is φ = 1133841580.

The previous prime is 1133841539. The next prime is 1133841601. The reversal of 1133841581 is 1851483311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 874148356 + 259693225 = 29566^2 + 16115^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133841581 - 2¹⁰ = 1133840557 is a prime.

It is a super-2 number, since 2×1133841581² = 2571193461609159122, which contains 22 as substring.

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 (1133840581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566920790 + 566920791.

It is an arithmetic number, because the mean of its divisors is an integer number (566920791).

Almost surely, 2^1133841581 is an apocalyptic number.

It is an amenable number.

1133841581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133841581 is an equidigital number, since it uses as much as digits as its factorization.

1133841581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 35.

The square root of 1133841581 is about 33672.5642177723. The cubic root of 1133841581 is about 1042.7594313575.

The spelling of 1133841581 in words is "one billion, one hundred thirty-three million, eight hundred forty-one thousand, five hundred eighty-one".