2100808519 has 2 divisors, whose sum is σ = 2100808520. Its totient is φ = 2100808518.

The previous prime is 2100808499. The next prime is 2100808543. The reversal of 2100808519 is 9158080012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100808519 - 2⁵ = 2100808487 is a prime.

It is a super-2 number, since 2×2100808519² = 8826792867005946722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100808019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050404259 + 1050404260.

It is an arithmetic number, because the mean of its divisors is an integer number (1050404260).

Almost surely, 2^2100808519 is an apocalyptic number.

2100808519 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100808519 is an equidigital number, since it uses as much as digits as its factorization.

2100808519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 2100808519 is about 45834.5777661363. The cubic root of 2100808519 is about 1280.7434887555.

The spelling of 2100808519 in words is "two billion, one hundred million, eight hundred eight thousand, five hundred nineteen".