2001991110 has 32 divisors (see below), whose sum is σ = 5491176192. Its totient is φ = 457597920.

The previous prime is 2001991081. The next prime is 2001991151. The reversal of 2001991110 is 111991002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4766436 + ... + 4766855.

It is an arithmetic number, because the mean of its divisors is an integer number (171599256).

Almost surely, 2^2001991110 is an apocalyptic number.

2001991110 is an abundant number, since it is smaller than the sum of its proper divisors (3489185082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001991110 is a wasteful number, since it uses less digits than its factorization.

2001991110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533308.

The product of its (nonzero) digits is 162, while the sum is 24.

The square root of 2001991110 is about 44743.6152987217. The cubic root of 2001991110 is about 1260.3390181224.

The spelling of 2001991110 in words is "two billion, one million, nine hundred ninety-one thousand, one hundred ten".