1135840817 has 2 divisors, whose sum is σ = 1135840818. Its totient is φ = 1135840816.

The previous prime is 1135840787. The next prime is 1135840831. The reversal of 1135840817 is 7180485311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115626801 + 20214016 = 33401^2 + 4496^2 .

It is an emirp because it is prime and its reverse (7180485311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1135840817 - 2¹⁸ = 1135578673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135842817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567920408 + 567920409.

It is an arithmetic number, because the mean of its divisors is an integer number (567920409).

Almost surely, 2^1135840817 is an apocalyptic number.

It is an amenable number.

1135840817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135840817 is an equidigital number, since it uses as much as digits as its factorization.

1135840817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 1135840817 is about 33702.2375666661. The cubic root of 1135840817 is about 1043.3719502311.

The spelling of 1135840817 in words is "one billion, one hundred thirty-five million, eight hundred forty thousand, eight hundred seventeen".