2199013128 has 144 divisors (see below), whose sum is σ = 6504376320. Its totient is φ = 670819968.

The previous prime is 2199013099. The next prime is 2199013133. The reversal of 2199013128 is 8213109912.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2199013092 and 2199013101.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1544625 + ... + 1546047.

It is an arithmetic number, because the mean of its divisors is an integer number (45169280).

Almost surely, 2^2199013128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2199013128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3252188160).

2199013128 is an abundant number, since it is smaller than the sum of its proper divisors (4305363192).

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

2199013128 is a wasteful number, since it uses less digits than its factorization.

2199013128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 2199013128 is about 46893.6363273312. The cubic root of 2199013128 is about 1300.3969454500.

The spelling of 2199013128 in words is "two billion, one hundred ninety-nine million, thirteen thousand, one hundred twenty-eight".