1226500169 has 2 divisors, whose sum is σ = 1226500170. Its totient is φ = 1226500168.

The previous prime is 1226500153. The next prime is 1226500211. The reversal of 1226500169 is 9610056221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000899769 + 225600400 = 31637^2 + 15020^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226500169 - 2⁴ = 1226500153 is a prime.

It is a super-2 number, since 2×1226500169² = 3008605329114057122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1226508169) 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, 613250084 + 613250085.

It is an arithmetic number, because the mean of its divisors is an integer number (613250085).

Almost surely, 2^1226500169 is an apocalyptic number.

It is an amenable number.

1226500169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226500169 is an equidigital number, since it uses as much as digits as its factorization.

1226500169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1226500169 is about 35021.4244284838. The cubic root of 1226500169 is about 1070.4240811779.

The spelling of 1226500169 in words is "one billion, two hundred twenty-six million, five hundred thousand, one hundred sixty-nine".