2163689472 has 144 divisors (see below), whose sum is σ = 6711148080. Its totient is φ = 618110976.

The previous prime is 2163689453. The next prime is 2163689483. The reversal of 2163689472 is 2749863612.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297463 + ... + 304649.

It is an arithmetic number, because the mean of its divisors is an integer number (46605195).

Almost surely, 2^2163689472 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 2163689472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3355574040).

2163689472 is an abundant number, since it is smaller than the sum of its proper divisors (4547458608).

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

2163689472 is an equidigital number, since it uses as much as digits as its factorization.

2163689472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7226 (or 7199 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 2163689472 is about 46515.4756183359. The cubic root of 2163689472 is about 1293.3963885602.

The spelling of 2163689472 in words is "two billion, one hundred sixty-three million, six hundred eighty-nine thousand, four hundred seventy-two".