1226360689 has 2 divisors, whose sum is σ = 1226360690. Its totient is φ = 1226360688.

The previous prime is 1226360633. The next prime is 1226360699. The reversal of 1226360689 is 9860636221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1152263025 + 74097664 = 33945^2 + 8608^2 .

It is an emirp because it is prime and its reverse (9860636221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226360689 - 2¹³ = 1226352497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226360609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613180344 + 613180345.

It is an arithmetic number, because the mean of its divisors is an integer number (613180345).

Almost surely, 2^1226360689 is an apocalyptic number.

It is an amenable number.

1226360689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226360689 is an equidigital number, since it uses as much as digits as its factorization.

1226360689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1226360689 is about 35019.4330193965. The cubic root of 1226360689 is about 1070.3835027324.

The spelling of 1226360689 in words is "one billion, two hundred twenty-six million, three hundred sixty thousand, six hundred eighty-nine".