1264806047 has 2 divisors, whose sum is σ = 1264806048. Its totient is φ = 1264806046.

The previous prime is 1264805977. The next prime is 1264806061. The reversal of 1264806047 is 7406084621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264806047 - 2⁸ = 1264805791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1264806047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264806847) 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, 632403023 + 632403024.

It is an arithmetic number, because the mean of its divisors is an integer number (632403024).

Almost surely, 2^1264806047 is an apocalyptic number.

1264806047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264806047 is an equidigital number, since it uses as much as digits as its factorization.

1264806047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1264806047 is about 35564.1117842130. Note that the first 3 decimals coincide. The cubic root of 1264806047 is about 1081.4538168487.

The spelling of 1264806047 in words is "one billion, two hundred sixty-four million, eight hundred six thousand, forty-seven".