2101799958 has 16 divisors (see below), whose sum is σ = 4206187440. Its totient is φ = 700168736.

The previous prime is 2101799939. The next prime is 2101799993. The reversal of 2101799958 is 8599971012.

It is a self number, because there is not a number n which added to its sum of digits gives 2101799958.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 97173 + ... + 116816.

It is an arithmetic number, because the mean of its divisors is an integer number (262886715).

Almost surely, 2^2101799958 is an apocalyptic number.

2101799958 is an abundant number, since it is smaller than the sum of its proper divisors (2104387482).

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

2101799958 is a wasteful number, since it uses less digits than its factorization.

2101799958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215631.

The product of its (nonzero) digits is 408240, while the sum is 51.

The square root of 2101799958 is about 45845.3918949331. The cubic root of 2101799958 is about 1280.9449317293.

The spelling of 2101799958 in words is "two billion, one hundred one million, seven hundred ninety-nine thousand, nine hundred fifty-eight".