2091663210 has 64 divisors (see below), whose sum is σ = 6178459392. Its totient is φ = 441317376.

The previous prime is 2091663199. The next prime is 2091663253. The reversal of 2091663210 is 123661902.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380359 + ... + 385818.

It is an arithmetic number, because the mean of its divisors is an integer number (96538428).

Almost surely, 2^2091663210 is an apocalyptic number.

2091663210 is an abundant number, since it is smaller than the sum of its proper divisors (4086796182).

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

2091663210 is a wasteful number, since it uses less digits than its factorization.

2091663210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766207.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2091663210 is about 45734.7046563111. The cubic root of 2091663210 is about 1278.8823271681.

The spelling of 2091663210 in words is "two billion, ninety-one million, six hundred sixty-three thousand, two hundred ten".