1127280643 has 2 divisors, whose sum is σ = 1127280644. Its totient is φ = 1127280642.

The previous prime is 1127280619. The next prime is 1127280709. The reversal of 1127280643 is 3460827211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1127280643 - 2⁵ = 1127280611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1127280599 and 1127280608.

It is not a weakly prime, because it can be changed into another prime (1127280043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563640321 + 563640322.

It is an arithmetic number, because the mean of its divisors is an integer number (563640322).

Almost surely, 2^1127280643 is an apocalyptic number.

1127280643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127280643 is an equidigital number, since it uses as much as digits as its factorization.

1127280643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1127280643 is about 33575.0002680566. Note that the first 3 decimals coincide. The cubic root of 1127280643 is about 1040.7442413815.

The spelling of 1127280643 in words is "one billion, one hundred twenty-seven million, two hundred eighty thousand, six hundred forty-three".