1121644464 has 40 divisors (see below), whose sum is σ = 2907855552. Its totient is φ = 372555840.

The previous prime is 1121644451. The next prime is 1121644471. The reversal of 1121644464 is 4644461211.

It is a super-3 number, since 3×1121644464³ (a number of 28 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27702 + ... + 54869.

Almost surely, 2^1121644464 is an apocalyptic number.

It is an amenable number.

1121644464 is an abundant number, since it is smaller than the sum of its proper divisors (1786211088).

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

1121644464 is a wasteful number, since it uses less digits than its factorization.

1121644464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82865 (or 82859 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 1121644464 is about 33490.9609297792. The cubic root of 1121644464 is about 1039.0068378643.

The spelling of 1121644464 in words is "one billion, one hundred twenty-one million, six hundred forty-four thousand, four hundred sixty-four".