1264361867 has 2 divisors, whose sum is σ = 1264361868. Its totient is φ = 1264361866.

The previous prime is 1264361851. The next prime is 1264361869. The reversal of 1264361867 is 7681634621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264361867 - 2⁴ = 1264361851 is a prime.

It is a super-2 number, since 2×1264361867² = 3197221861447451378, which contains 22 as substring.

Together with 1264361869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1264361869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632180933 + 632180934.

It is an arithmetic number, because the mean of its divisors is an integer number (632180934).

Almost surely, 2^1264361867 is an apocalyptic number.

1264361867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264361867 is an equidigital number, since it uses as much as digits as its factorization.

1264361867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 1264361867 is about 35557.8664573678. The cubic root of 1264361867 is about 1081.3272054998.

The spelling of 1264361867 in words is "one billion, two hundred sixty-four million, three hundred sixty-one thousand, eight hundred sixty-seven".