1361117089 has 2 divisors, whose sum is σ = 1361117090. Its totient is φ = 1361117088.

The previous prime is 1361117081. The next prime is 1361117099. The reversal of 1361117089 is 9807111631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153757089 + 207360000 = 33967^2 + 14400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361117089 - 2³ = 1361117081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361117081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680558544 + 680558545.

It is an arithmetic number, because the mean of its divisors is an integer number (680558545).

Almost surely, 2^1361117089 is an apocalyptic number.

It is an amenable number.

1361117089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361117089 is an equidigital number, since it uses as much as digits as its factorization.

1361117089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 1361117089 is about 36893.3203845899. The cubic root of 1361117089 is about 1108.2349159462.

The spelling of 1361117089 in words is "one billion, three hundred sixty-one million, one hundred seventeen thousand, eighty-nine".