2010001091 has 4 divisors (see below), whose sum is σ = 2297144112. Its totient is φ = 1722858072.

The previous prime is 2010001079. The next prime is 2010001111. The reversal of 2010001091 is 1901000102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1901000102 = 2 ⋅950500051.

It is a cyclic number.

It is not a de Polignac number, because 2010001091 - 2²² = 2005806787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2010051091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143571500 + ... + 143571513.

It is an arithmetic number, because the mean of its divisors is an integer number (574286028).

Almost surely, 2^2010001091 is an apocalyptic number.

2010001091 is a deficient number, since it is larger than the sum of its proper divisors (287143021).

2010001091 is an equidigital number, since it uses as much as digits as its factorization.

2010001091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287143020.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2010001091 is about 44833.0357102885. The cubic root of 2010001091 is about 1262.0176565551.

Adding to 2010001091 its reverse (1901000102), we get a palindrome (3911001193).

The spelling of 2010001091 in words is "two billion, ten million, one thousand, ninety-one".