1668329733 has 16 divisors (see below), whose sum is σ = 2543305856. Its totient is φ = 952922880.

The previous prime is 1668329669. The next prime is 1668329753. The reversal of 1668329733 is 3379238661.

It is not a de Polignac number, because 1668329733 - 2⁶ = 1668329669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668329753) 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, 37185 + ... + 68697.

It is an arithmetic number, because the mean of its divisors is an integer number (158956616).

Almost surely, 2^1668329733 is an apocalyptic number.

It is an amenable number.

1668329733 is a deficient number, since it is larger than the sum of its proper divisors (874976123).

1668329733 is a wasteful number, since it uses less digits than its factorization.

1668329733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34044.

The product of its digits is 979776, while the sum is 48.

The square root of 1668329733 is about 40845.1922874651. The cubic root of 1668329733 is about 1186.0253270348.

The spelling of 1668329733 in words is "one billion, six hundred sixty-eight million, three hundred twenty-nine thousand, seven hundred thirty-three".