1668992204 has 72 divisors (see below), whose sum is σ = 3420106704. Its totient is φ = 709632000.

The previous prime is 1668992203. The next prime is 1668992251. The reversal of 1668992204 is 4022998661.

It is not an unprimeable number, because it can be changed into a prime (1668992201) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1587479 + ... + 1588529.

It is an arithmetic number, because the mean of its divisors is an integer number (47501482).

Almost surely, 2^1668992204 is an apocalyptic number.

It is an amenable number.

1668992204 is an abundant number, since it is smaller than the sum of its proper divisors (1751114500).

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

1668992204 is a wasteful number, since it uses less digits than its factorization.

1668992204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1668992204 is about 40853.3010171761. The cubic root of 1668992204 is about 1186.1822910917.

The spelling of 1668992204 in words is "one billion, six hundred sixty-eight million, nine hundred ninety-two thousand, two hundred four".