2163848729 has 4 divisors (see below), whose sum is σ = 2472969984. Its totient is φ = 1854727476.

The previous prime is 2163848711. The next prime is 2163848737. The reversal of 2163848729 is 9278483612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2163848729 - 2²⁴ = 2147071513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2163848749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154560617 + ... + 154560630.

It is an arithmetic number, because the mean of its divisors is an integer number (618242496).

Almost surely, 2^2163848729 is an apocalyptic number.

It is an amenable number.

2163848729 is a deficient number, since it is larger than the sum of its proper divisors (309121255).

2163848729 is an equidigital number, since it uses as much as digits as its factorization.

2163848729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309121254.

The product of its digits is 1161216, while the sum is 50.

The square root of 2163848729 is about 46517.1874579708. The cubic root of 2163848729 is about 1293.4281209904.

The spelling of 2163848729 in words is "two billion, one hundred sixty-three million, eight hundred forty-eight thousand, seven hundred twenty-nine".