1268993577 has 16 divisors (see below), whose sum is σ = 1795390272. Its totient is φ = 794511360.

The previous prime is 1268993573. The next prime is 1268993591. The reversal of 1268993577 is 7753998621.

It is not a de Polignac number, because 1268993577 - 2² = 1268993573 is a prime.

It is a super-2 number, since 2×1268993577² = 3220689396934509858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1268993573) 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, 2824 + ... + 50457.

It is an arithmetic number, because the mean of its divisors is an integer number (112211892).

Almost surely, 2^1268993577 is an apocalyptic number.

1268993577 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1268993577 is a deficient number, since it is larger than the sum of its proper divisors (526396695).

1268993577 is a wasteful number, since it uses less digits than its factorization.

1268993577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53768.

The product of its digits is 5715360, while the sum is 57.

The square root of 1268993577 is about 35622.9361086365. The cubic root of 1268993577 is about 1082.6459974436.

The spelling of 1268993577 in words is "one billion, two hundred sixty-eight million, nine hundred ninety-three thousand, five hundred seventy-seven".