1267264159 has 16 divisors (see below), whose sum is σ = 1515520000. Its totient is φ = 1036774080.

The previous prime is 1267264153. The next prime is 1267264217. The reversal of 1267264159 is 9514627621.

It is a cyclic number.

It is not a de Polignac number, because 1267264159 - 2¹¹ = 1267262111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267264153) 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 in 15 ways as a sum of consecutive naturals, for example, 24159 + ... + 55840.

It is an arithmetic number, because the mean of its divisors is an integer number (94720000).

Almost surely, 2^1267264159 is an apocalyptic number.

1267264159 is a deficient number, since it is larger than the sum of its proper divisors (248255841).

1267264159 is an equidigital number, since it uses as much as digits as its factorization.

1267264159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80110.

The product of its digits is 181440, while the sum is 43.

The square root of 1267264159 is about 35598.6538930898. The cubic root of 1267264159 is about 1082.1539543222.

The spelling of 1267264159 in words is "one billion, two hundred sixty-seven million, two hundred sixty-four thousand, one hundred fifty-nine".