2086069891 has 2 divisors, whose sum is σ = 2086069892. Its totient is φ = 2086069890.

The previous prime is 2086069861. The next prime is 2086069961. The reversal of 2086069891 is 1989606802.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2086069891 - 2¹¹ = 2086067843 is a prime.

It is not a weakly prime, because it can be changed into another prime (2086069861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043034945 + 1043034946.

It is an arithmetic number, because the mean of its divisors is an integer number (1043034946).

Almost surely, 2^2086069891 is an apocalyptic number.

2086069891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2086069891 is an equidigital number, since it uses as much as digits as its factorization.

2086069891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 2086069891 is about 45673.5141082882. The cubic root of 2086069891 is about 1277.7413559706.

The spelling of 2086069891 in words is "two billion, eighty-six million, sixty-nine thousand, eight hundred ninety-one".