2199786540 has 96 divisors (see below), whose sum is σ = 7046505984. Its totient is φ = 502295040.

The previous prime is 2199786527. The next prime is 2199786551. The reversal of 2199786540 is 456879912.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 540192 + ... + 544248.

It is an arithmetic number, because the mean of its divisors is an integer number (73401104).

Almost surely, 2^2199786540 is an apocalyptic number.

2199786540 is a gapful number since it is divisible by the number (20) 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 2199786540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3523252992).

2199786540 is an abundant number, since it is smaller than the sum of its proper divisors (4846719444).

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

2199786540 is a wasteful number, since it uses less digits than its factorization.

2199786540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5367 (or 5365 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 2199786540 is about 46901.8820517898. The cubic root of 2199786540 is about 1300.5493812105.

The spelling of 2199786540 in words is "two billion, one hundred ninety-nine million, seven hundred eighty-six thousand, five hundred forty".