1268988877 has 8 divisors (see below), whose sum is σ = 1367836064. Its totient is φ = 1170317808.

The previous prime is 1268988869. The next prime is 1268988883. The reversal of 1268988877 is 7788898621.

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

It is a cyclic number.

It is not a de Polignac number, because 1268988877 - 2³ = 1268988869 is a prime.

It is a super-2 number, since 2×1268988877² = 3220665539899442258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268988887) 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, 28863 + ... + 58060.

It is an arithmetic number, because the mean of its divisors is an integer number (170979508).

Almost surely, 2^1268988877 is an apocalyptic number.

It is an amenable number.

1268988877 is a deficient number, since it is larger than the sum of its proper divisors (98847187).

1268988877 is a wasteful number, since it uses less digits than its factorization.

1268988877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88059.

The product of its digits is 21676032, while the sum is 64.

The square root of 1268988877 is about 35622.8701398413. The cubic root of 1268988877 is about 1082.6446608352.

The spelling of 1268988877 in words is "one billion, two hundred sixty-eight million, nine hundred eighty-eight thousand, eight hundred seventy-seven".