2101871968 has 24 divisors (see below), whose sum is σ = 4729212432. Its totient is φ = 900802176.

The previous prime is 2101871963. The next prime is 2101871969. The reversal of 2101871968 is 8691781012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101871963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4691455 + ... + 4691902.

It is an arithmetic number, because the mean of its divisors is an integer number (197050518).

Almost surely, 2^2101871968 is an apocalyptic number.

2101871968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2101871968 is an abundant number, since it is smaller than the sum of its proper divisors (2627340464).

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

2101871968 is an equidigital number, since it uses as much as digits as its factorization.

2101871968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9383374 (or 9383366 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 43.

The square root of 2101871968 is about 45846.1772452186. The cubic root of 2101871968 is about 1280.9595604274.

The spelling of 2101871968 in words is "two billion, one hundred one million, eight hundred seventy-one thousand, nine hundred sixty-eight".