2100996913 has 2 divisors, whose sum is σ = 2100996914. Its totient is φ = 2100996912.

The previous prime is 2100996889. The next prime is 2100996929. The reversal of 2100996913 is 3196990012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1726651809 + 374345104 = 41553^2 + 19348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100996913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100996013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050498456 + 1050498457.

It is an arithmetic number, because the mean of its divisors is an integer number (1050498457).

Almost surely, 2^2100996913 is an apocalyptic number.

It is an amenable number.

2100996913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100996913 is an equidigital number, since it uses as much as digits as its factorization.

2100996913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 2100996913 is about 45836.6328715363. The cubic root of 2100996913 is about 1280.7817719806.

The spelling of 2100996913 in words is "two billion, one hundred million, nine hundred ninety-six thousand, nine hundred thirteen".