1268003216 has 10 divisors (see below), whose sum is σ = 2456756262. Its totient is φ = 634001600.

The previous prime is 1268003189. The next prime is 1268003239. The reversal of 1268003216 is 6123008621.

It can be written as a sum of positive squares in only one way, i.e., 1250329600 + 17673616 = 35360^2 + 4204^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39625085 + ... + 39625116.

Almost surely, 2^1268003216 is an apocalyptic number.

1268003216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1268003216 is a deficient number, since it is larger than the sum of its proper divisors (1188753046).

1268003216 is an equidigital number, since it uses as much as digits as its factorization.

1268003216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79250209 (or 79250203 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1268003216 is about 35609.0327866400. The cubic root of 1268003216 is about 1082.3642809081.

The spelling of 1268003216 in words is "one billion, two hundred sixty-eight million, three thousand, two hundred sixteen".