2106458791 has 2 divisors, whose sum is σ = 2106458792. Its totient is φ = 2106458790.

The previous prime is 2106458789. The next prime is 2106458801. The reversal of 2106458791 is 1978546012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2106458791 - 2¹ = 2106458789 is a prime.

Together with 2106458789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106458191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053229395 + 1053229396.

It is an arithmetic number, because the mean of its divisors is an integer number (1053229396).

Almost surely, 2^2106458791 is an apocalyptic number.

2106458791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106458791 is an equidigital number, since it uses as much as digits as its factorization.

2106458791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 2106458791 is about 45896.1740344443. The cubic root of 2106458791 is about 1281.8906773973.

The spelling of 2106458791 in words is "two billion, one hundred six million, four hundred fifty-eight thousand, seven hundred ninety-one".