1226395013 has 2 divisors, whose sum is σ = 1226395014. Its totient is φ = 1226395012.

The previous prime is 1226394997. The next prime is 1226395019. The reversal of 1226395013 is 3105936221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1226260324 + 134689 = 35018^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226395013 - 2⁴ = 1226394997 is a prime.

It is a super-2 number, since 2×1226395013² = 3008089455822540338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226395019) 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, 613197506 + 613197507.

It is an arithmetic number, because the mean of its divisors is an integer number (613197507).

Almost surely, 2^1226395013 is an apocalyptic number.

It is an amenable number.

1226395013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226395013 is an equidigital number, since it uses as much as digits as its factorization.

1226395013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1226395013 is about 35019.9230867231. The cubic root of 1226395013 is about 1070.3934887832.

The spelling of 1226395013 in words is "one billion, two hundred twenty-six million, three hundred ninety-five thousand, thirteen".