1256948347 has 2 divisors, whose sum is σ = 1256948348. Its totient is φ = 1256948346.

The previous prime is 1256948327. The next prime is 1256948353. The reversal of 1256948347 is 7438496521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1256948347 - 2⁷ = 1256948219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1256948347.

It is not a weakly prime, because it can be changed into another prime (1256948327) 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, 628474173 + 628474174.

It is an arithmetic number, because the mean of its divisors is an integer number (628474174).

Almost surely, 2^1256948347 is an apocalyptic number.

1256948347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1256948347 is an equidigital number, since it uses as much as digits as its factorization.

1256948347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The square root of 1256948347 is about 35453.4673480606. The cubic root of 1256948347 is about 1079.2096260560.

The spelling of 1256948347 in words is "one billion, two hundred fifty-six million, nine hundred forty-eight thousand, three hundred forty-seven".