1127965681 has 8 divisors (see below), whose sum is σ = 1139062760. Its totient is φ = 1116882432.

The previous prime is 1127965651. The next prime is 1127965687. The reversal of 1127965681 is 1865697211.

It can be written as a sum of positive squares in 4 ways, for example, as 13456 + 1127952225 = 116^2 + 33585^2 .

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 1127965681 - 2⁵ = 1127965649 is a prime.

It is a super-2 number, since 2×1127965681² = 2544613155027587522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1127965687) 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, 247681 + ... + 252193.

It is an arithmetic number, because the mean of its divisors is an integer number (142382845).

Almost surely, 2^1127965681 is an apocalyptic number.

It is an amenable number.

1127965681 is a deficient number, since it is larger than the sum of its proper divisors (11097079).

1127965681 is a wasteful number, since it uses less digits than its factorization.

1127965681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6915.

The product of its digits is 181440, while the sum is 46.

The square root of 1127965681 is about 33585.2003269297. The cubic root of 1127965681 is about 1040.9550155690.

The spelling of 1127965681 in words is "one billion, one hundred twenty-seven million, nine hundred sixty-five thousand, six hundred eighty-one".