2087994990 has 16 divisors (see below), whose sum is σ = 5011188048. Its totient is φ = 556798656.

The previous prime is 2087994973. The next prime is 2087995031. The reversal of 2087994990 is 994997802.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2087994990.

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, 34799887 + ... + 34799946.

It is an arithmetic number, because the mean of its divisors is an integer number (313199253).

Almost surely, 2^2087994990 is an apocalyptic number.

2087994990 is an abundant number, since it is smaller than the sum of its proper divisors (2923193058).

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

2087994990 is a wasteful number, since it uses less digits than its factorization.

2087994990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69599843.

The product of its (nonzero) digits is 2939328, while the sum is 57.

The square root of 2087994990 is about 45694.5838147148. The cubic root of 2087994990 is about 1278.1342834157.

The spelling of 2087994990 in words is "two billion, eighty-seven million, nine hundred ninety-four thousand, nine hundred ninety".