2081090001 has 4 divisors (see below), whose sum is σ = 2774786672. Its totient is φ = 1387393332.

The previous prime is 2081089981. The next prime is 2081090009. The reversal of 2081090001 is 1000901802.

2081090001 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2081090001 - 2¹⁵ = 2081057233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2081090001.

It is not an unprimeable number, because it can be changed into a prime (2081090009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346848331 + ... + 346848336.

It is an arithmetic number, because the mean of its divisors is an integer number (693696668).

Almost surely, 2^2081090001 is an apocalyptic number.

It is an amenable number.

2081090001 is a deficient number, since it is larger than the sum of its proper divisors (693696671).

2081090001 is an equidigital number, since it uses as much as digits as its factorization.

2081090001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693696670.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2081090001 is about 45618.9653652952. The cubic root of 2081090001 is about 1276.7237995536.

Adding to 2081090001 its reverse (1000901802), we get a palindrome (3081991803).

The spelling of 2081090001 in words is "two billion, eighty-one million, ninety thousand, one".