2197784160 has 432 divisors, whose sum is σ = 8870320368. Its totient is φ = 491212800.

The previous prime is 2197784129. The next prime is 2197784167. The reversal of 2197784160 is 614877912.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197784167) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2676550 + ... + 2677370.

It is an arithmetic number, because the mean of its divisors is an integer number (20533149).

Almost surely, 2^2197784160 is an apocalyptic number.

2197784160 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 2197784160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4435160184).

2197784160 is an abundant number, since it is smaller than the sum of its proper divisors (6672536208).

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

2197784160 is a wasteful number, since it uses less digits than its factorization.

2197784160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 2197784160 is about 46880.5307137195. The cubic root of 2197784160 is about 1300.1546482689.

The spelling of 2197784160 in words is "two billion, one hundred ninety-seven million, seven hundred eighty-four thousand, one hundred sixty".