1267217163 has 64 divisors (see below), whose sum is σ = 2005401600. Its totient is φ = 789639840.

The previous prime is 1267217153. The next prime is 1267217167. The reversal of 1267217163 is 3617127621.

It is a happy number.

It is not a de Polignac number, because 1267217163 - 2⁶ = 1267217099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1267217167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3308470 + ... + 3308852.

It is an arithmetic number, because the mean of its divisors is an integer number (31334400).

Almost surely, 2^1267217163 is an apocalyptic number.

1267217163 is a deficient number, since it is larger than the sum of its proper divisors (738184437).

1267217163 is a wasteful number, since it uses less digits than its factorization.

1267217163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 1267217163 is about 35597.9938058312. The cubic root of 1267217163 is about 1082.1405770703.

The spelling of 1267217163 in words is "one billion, two hundred sixty-seven million, two hundred seventeen thousand, one hundred sixty-three".