1136447813 has 2 divisors, whose sum is σ = 1136447814. Its totient is φ = 1136447812.

The previous prime is 1136447789. The next prime is 1136447831. The reversal of 1136447813 is 3187446311.

Together with next prime (1136447831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677717089 + 458730724 = 26033^2 + 21418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1136447813 - 2¹² = 1136443717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1136447113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568223906 + 568223907.

It is an arithmetic number, because the mean of its divisors is an integer number (568223907).

Almost surely, 2^1136447813 is an apocalyptic number.

It is an amenable number.

1136447813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1136447813 is an equidigital number, since it uses as much as digits as its factorization.

1136447813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 1136447813 is about 33711.2416413279. The cubic root of 1136447813 is about 1043.5577772730.

The spelling of 1136447813 in words is "one billion, one hundred thirty-six million, four hundred forty-seven thousand, eight hundred thirteen".