2146859988 has 96 divisors (see below), whose sum is σ = 6364323840. Its totient is φ = 547931520.

The previous prime is 2146859987. The next prime is 2146860041. The reversal of 2146859988 is 8899586412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146859987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2143 + ... + 65561.

It is an arithmetic number, because the mean of its divisors is an integer number (66295040).

Almost surely, 2^2146859988 is an apocalyptic number.

2146859988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2146859988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3182161920).

2146859988 is an abundant number, since it is smaller than the sum of its proper divisors (4217463852).

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

2146859988 is a wasteful number, since it uses less digits than its factorization.

2146859988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63477 (or 63475 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 60.

The square root of 2146859988 is about 46334.2204855116. The cubic root of 2146859988 is about 1290.0342494362.

The spelling of 2146859988 in words is "two billion, one hundred forty-six million, eight hundred fifty-nine thousand, nine hundred eighty-eight".