1223985733 has 16 divisors (see below), whose sum is σ = 1293304320. Its totient is φ = 1156084336.

The previous prime is 1223985727. The next prime is 1223985769. The reversal of 1223985733 is 3375893221.

It is a cyclic number.

It is not a de Polignac number, because 1223985733 - 2²⁹ = 687114821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223985733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223989733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1030566 + ... + 1031752.

It is an arithmetic number, because the mean of its divisors is an integer number (80831520).

Almost surely, 2^1223985733 is an apocalyptic number.

It is an amenable number.

1223985733 is a deficient number, since it is larger than the sum of its proper divisors (69318587).

1223985733 is a wasteful number, since it uses less digits than its factorization.

1223985733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its digits is 272160, while the sum is 43.

The square root of 1223985733 is about 34985.5074709515. The cubic root of 1223985733 is about 1069.6920920889.

The spelling of 1223985733 in words is "one billion, two hundred twenty-three million, nine hundred eighty-five thousand, seven hundred thirty-three".