1268307863 has 8 divisors (see below), whose sum is σ = 1279005840. Its totient is φ = 1257632640.

The previous prime is 1268307857. The next prime is 1268307871. The reversal of 1268307863 is 3687038621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1268307863 - 2⁴ = 1268307847 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 (1268307823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117281 + ... + 127637.

It is an arithmetic number, because the mean of its divisors is an integer number (159875730).

Almost surely, 2^1268307863 is an apocalyptic number.

1268307863 is a deficient number, since it is larger than the sum of its proper divisors (10697977).

1268307863 is a wasteful number, since it uses less digits than its factorization.

1268307863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11377.

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

The square root of 1268307863 is about 35613.3101943641. The cubic root of 1268307863 is about 1082.4509559320.

The spelling of 1268307863 in words is "one billion, two hundred sixty-eight million, three hundred seven thousand, eight hundred sixty-three".