1213296379 has 2 divisors, whose sum is σ = 1213296380. Its totient is φ = 1213296378.

The previous prime is 1213296373. The next prime is 1213296397. The reversal of 1213296379 is 9736923121.

Together with next prime (1213296397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213296379 - 2⁷ = 1213296251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213296373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606648189 + 606648190.

It is an arithmetic number, because the mean of its divisors is an integer number (606648190).

Almost surely, 2^1213296379 is an apocalyptic number.

1213296379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213296379 is an equidigital number, since it uses as much as digits as its factorization.

1213296379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 1213296379 is about 34832.4041518813. The cubic root of 1213296379 is about 1066.5690257086.

The spelling of 1213296379 in words is "one billion, two hundred thirteen million, two hundred ninety-six thousand, three hundred seventy-nine".