1121783646 has 24 divisors (see below), whose sum is σ = 2345361480. Its totient is φ = 357669136.

The previous prime is 1121783581. The next prime is 1121783653. The reversal of 1121783646 is 6463871211.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 173541 + ... + 179888.

It is an arithmetic number, because the mean of its divisors is an integer number (97723395).

Almost surely, 2^1121783646 is an apocalyptic number.

1121783646 is an abundant number, since it is smaller than the sum of its proper divisors (1223577834).

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

1121783646 is a wasteful number, since it uses less digits than its factorization.

1121783646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353480 (or 353457 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 1121783646 is about 33493.0387692726. The cubic root of 1121783646 is about 1039.0498119894.

The spelling of 1121783646 in words is "one billion, one hundred twenty-one million, seven hundred eighty-three thousand, six hundred forty-six".