1127978759 has 8 divisors (see below), whose sum is σ = 1140952848. Its totient is φ = 1115032320.

The previous prime is 1127978743. The next prime is 1127978767. The reversal of 1127978759 is 9578797211.

It is a happy number.

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 1127978759 - 2⁴ = 1127978743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127978729) 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, 81569 + ... + 94389.

It is an arithmetic number, because the mean of its divisors is an integer number (142619106).

Almost surely, 2^1127978759 is an apocalyptic number.

1127978759 is a deficient number, since it is larger than the sum of its proper divisors (12974089).

1127978759 is an equidigital number, since it uses as much as digits as its factorization.

1127978759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13825.

The product of its digits is 2222640, while the sum is 56.

The square root of 1127978759 is about 33585.3950252189. The cubic root of 1127978759 is about 1040.9590386101.

The spelling of 1127978759 in words is "one billion, one hundred twenty-seven million, nine hundred seventy-eight thousand, seven hundred fifty-nine".