1268821794 has 8 divisors (see below), whose sum is σ = 2537643600. Its totient is φ = 422940596.

The previous prime is 1268821787. The next prime is 1268821849. The reversal of 1268821794 is 4971288621.

It is a happy number.

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

1268821794 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105735144 + ... + 105735155.

It is an arithmetic number, because the mean of its divisors is an integer number (317205450).

Almost surely, 2^1268821794 is an apocalyptic number.

1268821794 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1268821794 is a wasteful number, since it uses less digits than its factorization.

1268821794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211470304.

The product of its digits is 387072, while the sum is 48.

The square root of 1268821794 is about 35620.5248978731. The cubic root of 1268821794 is about 1082.5971428307.

The spelling of 1268821794 in words is "one billion, two hundred sixty-eight million, eight hundred twenty-one thousand, seven hundred ninety-four".