1213352449 has 2 divisors, whose sum is σ = 1213352450. Its totient is φ = 1213352448.

The previous prime is 1213352447. The next prime is 1213352453. The reversal of 1213352449 is 9442533121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209996225 + 3356224 = 34785^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213352449 - 2¹ = 1213352447 is a prime.

Together with 1213352447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1213352447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606676224 + 606676225.

It is an arithmetic number, because the mean of its divisors is an integer number (606676225).

Almost surely, 2^1213352449 is an apocalyptic number.

It is an amenable number.

1213352449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213352449 is an equidigital number, since it uses as much as digits as its factorization.

1213352449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 1213352449 is about 34833.2089965883. The cubic root of 1213352449 is about 1066.5854552211.

The spelling of 1213352449 in words is "one billion, two hundred thirteen million, three hundred fifty-two thousand, four hundred forty-nine".