1264266667 has 2 divisors, whose sum is σ = 1264266668. Its totient is φ = 1264266666.

The previous prime is 1264266649. The next prime is 1264266733. The reversal of 1264266667 is 7666624621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264266667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264266067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632133333 + 632133334.

It is an arithmetic number, because the mean of its divisors is an integer number (632133334).

Almost surely, 2^1264266667 is an apocalyptic number.

1264266667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264266667 is an equidigital number, since it uses as much as digits as its factorization.

1264266667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 46.

The square root of 1264266667 is about 35556.5277691734. The cubic root of 1264266667 is about 1081.3000653441.

The spelling of 1264266667 in words is "one billion, two hundred sixty-four million, two hundred sixty-six thousand, six hundred sixty-seven".