1226374889 has 2 divisors, whose sum is σ = 1226374890. Its totient is φ = 1226374888.

The previous prime is 1226374873. The next prime is 1226374943. The reversal of 1226374889 is 9884736221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754051600 + 472323289 = 27460^2 + 21733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226374889 - 2⁴ = 1226374873 is a prime.

It is a super-3 number, since 3×1226374889³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1226374489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613187444 + 613187445.

It is an arithmetic number, because the mean of its divisors is an integer number (613187445).

Almost surely, 2^1226374889 is an apocalyptic number.

It is an amenable number.

1226374889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226374889 is an equidigital number, since it uses as much as digits as its factorization.

1226374889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 1226374889 is about 35019.6357633828. The cubic root of 1226374889 is about 1070.3876340311.

The spelling of 1226374889 in words is "one billion, two hundred twenty-six million, three hundred seventy-four thousand, eight hundred eighty-nine".