1127778243 has 16 divisors (see below), whose sum is σ = 1539770496. Its totient is φ = 733844160.

The previous prime is 1127778229. The next prime is 1127778277. The reversal of 1127778243 is 3428777211.

It is not a de Polignac number, because 1127778243 - 2⁴ = 1127778227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1127778195 and 1127778204.

It is not an unprimeable number, because it can be changed into a prime (1127778203) 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, 273628 + ... + 277718.

It is an arithmetic number, because the mean of its divisors is an integer number (96235656).

Almost surely, 2^1127778243 is an apocalyptic number.

1127778243 is a deficient number, since it is larger than the sum of its proper divisors (411992253).

1127778243 is a wasteful number, since it uses less digits than its factorization.

1127778243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6274.

The product of its digits is 131712, while the sum is 42.

The square root of 1127778243 is about 33582.4097259265. The cubic root of 1127778243 is about 1040.8973526636.

The spelling of 1127778243 in words is "one billion, one hundred twenty-seven million, seven hundred seventy-eight thousand, two hundred forty-three".