2100605191 has 2 divisors, whose sum is σ = 2100605192. Its totient is φ = 2100605190.

The previous prime is 2100605159. The next prime is 2100605197. The reversal of 2100605191 is 1915060012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100605191 - 2⁵ = 2100605159 is a prime.

It is a super-2 number, since 2×2100605191² = 8825084336912292962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100605197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050302595 + 1050302596.

It is an arithmetic number, because the mean of its divisors is an integer number (1050302596).

Almost surely, 2^2100605191 is an apocalyptic number.

2100605191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100605191 is an equidigital number, since it uses as much as digits as its factorization.

2100605191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 2100605191 is about 45832.3596490515. The cubic root of 2100605191 is about 1280.7021682494.

The spelling of 2100605191 in words is "two billion, one hundred million, six hundred five thousand, one hundred ninety-one".