1268887507 has 16 divisors (see below), whose sum is σ = 1355356800. Its totient is φ = 1184483520.

The previous prime is 1268887447. The next prime is 1268887511. The reversal of 1268887507 is 7057888621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1268887507 - 2⁷ = 1268887379 is a prime.

It is a super-2 number, since 2×1268887507² = 3220151010841350098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268887517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558588 + ... + 560854.

It is an arithmetic number, because the mean of its divisors is an integer number (84709800).

Almost surely, 2^1268887507 is an apocalyptic number.

1268887507 is a deficient number, since it is larger than the sum of its proper divisors (86469293).

1268887507 is a wasteful number, since it uses less digits than its factorization.

1268887507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The square root of 1268887507 is about 35621.4472895193. The cubic root of 1268887507 is about 1082.6158319479.

The spelling of 1268887507 in words is "one billion, two hundred sixty-eight million, eight hundred eighty-seven thousand, five hundred seven".