2081905158 has 32 divisors (see below), whose sum is σ = 4202827776. Its totient is φ = 687482208.

The previous prime is 2081905151. The next prime is 2081905169. The reversal of 2081905158 is 8515091802.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081905151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648385 + ... + 651587.

It is an arithmetic number, because the mean of its divisors is an integer number (131338368).

Almost surely, 2^2081905158 is an apocalyptic number.

2081905158 is an abundant number, since it is smaller than the sum of its proper divisors (2120922618).

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

2081905158 is a wasteful number, since it uses less digits than its factorization.

2081905158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188.

The product of its (nonzero) digits is 28800, while the sum is 39.

The square root of 2081905158 is about 45627.8988996864. The cubic root of 2081905158 is about 1276.8904741468.

The spelling of 2081905158 in words is "two billion, eighty-one million, nine hundred five thousand, one hundred fifty-eight".