1137845809 has 2 divisors, whose sum is σ = 1137845810. Its totient is φ = 1137845808.

The previous prime is 1137845783. The next prime is 1137845831. The reversal of 1137845809 is 9085487311.

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., 757790784 + 380055025 = 27528^2 + 19495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137845809 - 2⁵ = 1137845777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1137845909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568922904 + 568922905.

It is an arithmetic number, because the mean of its divisors is an integer number (568922905).

Almost surely, 2^1137845809 is an apocalyptic number.

It is an amenable number.

1137845809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137845809 is an equidigital number, since it uses as much as digits as its factorization.

1137845809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 1137845809 is about 33731.9701322054. The cubic root of 1137845809 is about 1043.9855111806.

The spelling of 1137845809 in words is "one billion, one hundred thirty-seven million, eight hundred forty-five thousand, eight hundred nine".