1668992203 has 2 divisors, whose sum is σ = 1668992204. Its totient is φ = 1668992202.

The previous prime is 1668992201. The next prime is 1668992251. The reversal of 1668992203 is 3022998661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1668992203 - 2¹ = 1668992201 is a prime.

Together with 1668992201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1668992201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834496101 + 834496102.

It is an arithmetic number, because the mean of its divisors is an integer number (834496102).

Almost surely, 2^1668992203 is an apocalyptic number.

1668992203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668992203 is an equidigital number, since it uses as much as digits as its factorization.

1668992203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1668992203 is about 40853.3010049372. The cubic root of 1668992203 is about 1186.1822908548.

The spelling of 1668992203 in words is "one billion, six hundred sixty-eight million, nine hundred ninety-two thousand, two hundred three".