1226013379 has 2 divisors, whose sum is σ = 1226013380. Its totient is φ = 1226013378.

The previous prime is 1226013353. The next prime is 1226013391. The reversal of 1226013379 is 9733106221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226013379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226011379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613006689 + 613006690.

It is an arithmetic number, because the mean of its divisors is an integer number (613006690).

Almost surely, 2^1226013379 is an apocalyptic number.

1226013379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226013379 is an equidigital number, since it uses as much as digits as its factorization.

1226013379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 1226013379 is about 35014.4738501095. The cubic root of 1226013379 is about 1070.2824476357.

The spelling of 1226013379 in words is "one billion, two hundred twenty-six million, thirteen thousand, three hundred seventy-nine".