2163863851 has 8 divisors (see below), whose sum is σ = 2260755360. Its totient is φ = 2067206592.

The previous prime is 2163863837. The next prime is 2163863903. The reversal of 2163863851 is 1583683612.

2163863851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2163863851 - 2¹¹ = 2163861803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2163863798 and 2163863807.

It is not an unprimeable number, because it can be changed into a prime (2163863551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39540 + ... + 76753.

It is an arithmetic number, because the mean of its divisors is an integer number (282594420).

Almost surely, 2^2163863851 is an apocalyptic number.

2163863851 is a deficient number, since it is larger than the sum of its proper divisors (96891509).

2163863851 is a wasteful number, since it uses less digits than its factorization.

2163863851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117125.

The product of its digits is 207360, while the sum is 43.

The square root of 2163863851 is about 46517.3499997582. The cubic root of 2163863851 is about 1293.4311340129.

The spelling of 2163863851 in words is "two billion, one hundred sixty-three million, eight hundred sixty-three thousand, eight hundred fifty-one".