2166488850 has 96 divisors (see below), whose sum is σ = 5492952000. Its totient is φ = 564929280.

The previous prime is 2166488837. The next prime is 2166488903. The reversal of 2166488850 is 588846612.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166488850.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2026116 + ... + 2027184.

It is an arithmetic number, because the mean of its divisors is an integer number (57218250).

Almost surely, 2^2166488850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166488850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2746476000).

2166488850 is an abundant number, since it is smaller than the sum of its proper divisors (3326463150).

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

2166488850 is a wasteful number, since it uses less digits than its factorization.

2166488850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 2166488850 is about 46545.5567159745. The cubic root of 2166488850 is about 1293.9539462375.

The spelling of 2166488850 in words is "two billion, one hundred sixty-six million, four hundred eighty-eight thousand, eight hundred fifty".