1268081439 has 8 divisors (see below), whose sum is σ = 1696546992. Its totient is φ = 842501760.

The previous prime is 1268081431. The next prime is 1268081447. The reversal of 1268081439 is 9341808621.

It is an interprime number because it is at equal distance from previous prime (1268081431) and next prime (1268081447).

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

It is not a de Polignac number, because 1268081439 - 2³ = 1268081431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1268081439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268081431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720442 + ... + 722199.

It is an arithmetic number, because the mean of its divisors is an integer number (212068374).

Almost surely, 2^1268081439 is an apocalyptic number.

1268081439 is a deficient number, since it is larger than the sum of its proper divisors (428465553).

1268081439 is a wasteful number, since it uses less digits than its factorization.

1268081439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442937.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1268081439 is about 35610.1311286549. The cubic root of 1268081439 is about 1082.3865374343.

The spelling of 1268081439 in words is "one billion, two hundred sixty-eight million, eighty-one thousand, four hundred thirty-nine".