1123556678 has 16 divisors (see below), whose sum is σ = 1776390000. Its totient is φ = 531505152.

The previous prime is 1123556677. The next prime is 1123556683. The reversal of 1123556678 is 8766553211.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123556671) 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, 9998 + ... + 48446.

It is an arithmetic number, because the mean of its divisors is an integer number (111024375).

Almost surely, 2^1123556678 is an apocalyptic number.

1123556678 is a deficient number, since it is larger than the sum of its proper divisors (652833322).

1123556678 is a wasteful number, since it uses less digits than its factorization.

1123556678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39239.

The product of its digits is 302400, while the sum is 44.

The square root of 1123556678 is about 33519.4969830993. The cubic root of 1123556678 is about 1039.5969462569.

The spelling of 1123556678 in words is "one billion, one hundred twenty-three million, five hundred fifty-six thousand, six hundred seventy-eight".