1268240319 has 12 divisors (see below), whose sum is σ = 1832926992. Its totient is φ = 845020800.

The previous prime is 1268240297. The next prime is 1268240321. The reversal of 1268240319 is 9130428621.

It is not a de Polignac number, because 1268240319 - 2²⁸ = 999804863 is a prime.

It is a super-2 number, since 2×1268240319² = 3216867013474443522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268240359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22002 + ... + 54959.

It is an arithmetic number, because the mean of its divisors is an integer number (152743916).

Almost surely, 2^1268240319 is an apocalyptic number.

1268240319 is a deficient number, since it is larger than the sum of its proper divisors (564686673).

1268240319 is a wasteful number, since it uses less digits than its factorization.

1268240319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78798 (or 78795 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1268240319 is about 35612.3618846041. The cubic root of 1268240319 is about 1082.4317402070.

The spelling of 1268240319 in words is "one billion, two hundred sixty-eight million, two hundred forty thousand, three hundred nineteen".