1264947347 has 2 divisors, whose sum is σ = 1264947348. Its totient is φ = 1264947346.

The previous prime is 1264947329. The next prime is 1264947367. The reversal of 1264947347 is 7437494621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1264947347 - 2⁸ = 1264947091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264947367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632473673 + 632473674.

It is an arithmetic number, because the mean of its divisors is an integer number (632473674).

Almost surely, 2^1264947347 is an apocalyptic number.

1264947347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264947347 is an equidigital number, since it uses as much as digits as its factorization.

1264947347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 47.

The square root of 1264947347 is about 35566.0982819313. The cubic root of 1264947347 is about 1081.4940875117.

The spelling of 1264947347 in words is "one billion, two hundred sixty-four million, nine hundred forty-seven thousand, three hundred forty-seven".