1122643896 has 32 divisors (see below), whose sum is σ = 3061756800. Its totient is φ = 340195040.

The previous prime is 1122643891. The next prime is 1122643913. The reversal of 1122643896 is 6983462211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122643891) 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, 2125956 + ... + 2126483.

It is an arithmetic number, because the mean of its divisors is an integer number (95679900).

Almost surely, 2^1122643896 is an apocalyptic number.

It is an amenable number.

1122643896 is an abundant number, since it is smaller than the sum of its proper divisors (1939112904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1122643896 is a wasteful number, since it uses less digits than its factorization.

1122643896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252459 (or 4252455 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 1122643896 is about 33505.8785289985. The cubic root of 1122643896 is about 1039.3153457274.

The spelling of 1122643896 in words is "one billion, one hundred twenty-two million, six hundred forty-three thousand, eight hundred ninety-six".