1313222149 has 2 divisors, whose sum is σ = 1313222150. Its totient is φ = 1313222148.

The previous prime is 1313222147. The next prime is 1313222233. The reversal of 1313222149 is 9412223131.

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., 1215568225 + 97653924 = 34865^2 + 9882^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313222149 - 2¹ = 1313222147 is a prime.

Together with 1313222147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313222147) 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, 656611074 + 656611075.

It is an arithmetic number, because the mean of its divisors is an integer number (656611075).

Almost surely, 2^1313222149 is an apocalyptic number.

It is an amenable number.

1313222149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313222149 is an equidigital number, since it uses as much as digits as its factorization.

1313222149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 1313222149 is about 36238.4070979948. The cubic root of 1313222149 is about 1095.0805523055.

The spelling of 1313222149 in words is "one billion, three hundred thirteen million, two hundred twenty-two thousand, one hundred forty-nine".