2194857000 has 640 divisors, whose sum is σ = 9060480000. Its totient is φ = 495331200.

The previous prime is 2194856959. The next prime is 2194857011. The reversal of 2194857000 is 7584912.

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

It is a nialpdrome in base 15.

It is a zygodrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 27782961 + ... + 27783039.

It is an arithmetic number, because the mean of its divisors is an integer number (14157000).

Almost surely, 2^2194857000 is an apocalyptic number.

2194857000 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 2194857000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4530240000).

2194857000 is an abundant number, since it is smaller than the sum of its proper divisors (6865623000).

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

2194857000 is an equidigital number, since it uses as much as digits as its factorization.

2194857000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 2194857000 is about 46849.3009552971. The cubic root of 2194857000 is about 1299.5771800486.

The spelling of 2194857000 in words is "two billion, one hundred ninety-four million, eight hundred fifty-seven thousand".