1226313909 has 6 divisors (see below), whose sum is σ = 1771342326. Its totient is φ = 817542600.

The previous prime is 1226313901. The next prime is 1226313943. The reversal of 1226313909 is 9093136221.

It is a happy number.

1226313909 is a `hidden beast` number, since 1 + 2 + 263 + 1 + 390 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1139265009 + 87048900 = 33753^2 + 9330^2 .

It is not a de Polignac number, because 1226313909 - 2³ = 1226313901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226313901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68128542 + ... + 68128559.

It is an arithmetic number, because the mean of its divisors is an integer number (295223721).

Almost surely, 2^1226313909 is an apocalyptic number.

It is an amenable number.

1226313909 is a deficient number, since it is larger than the sum of its proper divisors (545028417).

1226313909 is a wasteful number, since it uses less digits than its factorization.

1226313909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136257107 (or 136257104 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 1226313909 is about 35018.7650981584. The cubic root of 1226313909 is about 1070.3698924959.

The spelling of 1226313909 in words is "one billion, two hundred twenty-six million, three hundred thirteen thousand, nine hundred nine".