1268981007 has 8 divisors (see below), whose sum is σ = 1933685376. Its totient is φ = 725131992.

The previous prime is 1268980981. The next prime is 1268981023. The reversal of 1268981007 is 7001898621.

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

It is not a de Polignac number, because 1268981007 - 2⁷ = 1268980879 is a prime.

It is a super-2 number, since 2×1268981007² = 3220625592253468098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1268981007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268981057) 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, 30213813 + ... + 30213854.

It is an arithmetic number, because the mean of its divisors is an integer number (241710672).

Almost surely, 2^1268981007 is an apocalyptic number.

1268981007 is a deficient number, since it is larger than the sum of its proper divisors (664704369).

1268981007 is an equidigital number, since it uses as much as digits as its factorization.

1268981007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60427677.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 1268981007 is about 35622.7596769256. The cubic root of 1268981007 is about 1082.6424227196.

The spelling of 1268981007 in words is "one billion, two hundred sixty-eight million, nine hundred eighty-one thousand, seven".