1264113647 has 2 divisors, whose sum is σ = 1264113648. Its totient is φ = 1264113646.

The previous prime is 1264113637. The next prime is 1264113661. The reversal of 1264113647 is 7463114621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1264113647 - 2⁸ = 1264113391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264113637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632056823 + 632056824.

It is an arithmetic number, because the mean of its divisors is an integer number (632056824).

Almost surely, 2^1264113647 is an apocalyptic number.

1264113647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264113647 is an equidigital number, since it uses as much as digits as its factorization.

1264113647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 1264113647 is about 35554.3759191467. The cubic root of 1264113647 is about 1081.2564386800.

The spelling of 1264113647 in words is "one billion, two hundred sixty-four million, one hundred thirteen thousand, six hundred forty-seven".