5581436369 has 2 divisors, whose sum is σ = 5581436370. Its totient is φ = 5581436368.

The previous prime is 5581436359. The next prime is 5581436401. The reversal of 5581436369 is 9636341855.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3268980625 + 2312455744 = 57175^2 + 48088^2 .

It is a cyclic number.

It is not a de Polignac number, because 5581436369 - 2²⁰ = 5580387793 is a prime.

It is a super-2 number, since 2×5581436369² = 62304863882391808322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5581436339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790718184 + 2790718185.

It is an arithmetic number, because the mean of its divisors is an integer number (2790718185).

Almost surely, 2^5581436369 is an apocalyptic number.

It is an amenable number.

5581436369 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581436369 is an equidigital number, since it uses as much as digits as its factorization.

5581436369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 50.

The square root of 5581436369 is about 74709.0112971655. The cubic root of 5581436369 is about 1773.8436024240.

The spelling of 5581436369 in words is "five billion, five hundred eighty-one million, four hundred thirty-six thousand, three hundred sixty-nine".