2106997903 has 2 divisors, whose sum is σ = 2106997904. Its totient is φ = 2106997902.

The previous prime is 2106997847. The next prime is 2106997909. The reversal of 2106997903 is 3097996012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106997903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106997909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053498951 + 1053498952.

It is an arithmetic number, because the mean of its divisors is an integer number (1053498952).

Almost surely, 2^2106997903 is an apocalyptic number.

2106997903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106997903 is an equidigital number, since it uses as much as digits as its factorization.

2106997903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 2106997903 is about 45902.0468280010. The cubic root of 2106997903 is about 1282.0000273802. Note that the first 4 decimals are identical.

The spelling of 2106997903 in words is "two billion, one hundred six million, nine hundred ninety-seven thousand, nine hundred three".