1268264163 has 18 divisors (see below), whose sum is σ = 1753814244. Its totient is φ = 815202528.

The previous prime is 1268264149. The next prime is 1268264191. The reversal of 1268264163 is 3614628621.

It is not a de Polignac number, because 1268264163 - 2⁴ = 1268264147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1268264143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1788453 + ... + 1789161.

Almost surely, 2^1268264163 is an apocalyptic number.

1268264163 is a deficient number, since it is larger than the sum of its proper divisors (485550081).

1268264163 is an frugal number, since it uses more digits than its factorization.

1268264163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 741 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 1268264163 is about 35612.6966544237. The cubic root of 1268264163 is about 1082.4385237112.

The spelling of 1268264163 in words is "one billion, two hundred sixty-eight million, two hundred sixty-four thousand, one hundred sixty-three".