1121838864 has 40 divisors (see below), whose sum is σ = 2959751040. Its totient is φ = 365989248.

The previous prime is 1121838841. The next prime is 1121838877. The reversal of 1121838864 is 4688381211.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246379 + ... + 250890.

It is an arithmetic number, because the mean of its divisors is an integer number (73993776).

Almost surely, 2^1121838864 is an apocalyptic number.

It is an amenable number.

1121838864 is an abundant number, since it is smaller than the sum of its proper divisors (1837912176).

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

1121838864 is a wasteful number, since it uses less digits than its factorization.

1121838864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497327 (or 497321 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 1121838864 is about 33493.8630796748. The cubic root of 1121838864 is about 1039.0668602296.

The spelling of 1121838864 in words is "one billion, one hundred twenty-one million, eight hundred thirty-eight thousand, eight hundred sixty-four".