2163485421 has 12 divisors (see below), whose sum is σ = 3133198848. Its totient is φ = 1438555464.

The previous prime is 2163485419. The next prime is 2163485437. The reversal of 2163485421 is 1245843612.

It is a happy number.

It is not a de Polignac number, because 2163485421 - 2¹ = 2163485419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163485461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310375 + ... + 317268.

It is an arithmetic number, because the mean of its divisors is an integer number (261099904).

Almost surely, 2^2163485421 is an apocalyptic number.

It is an amenable number.

2163485421 is a deficient number, since it is larger than the sum of its proper divisors (969713427).

2163485421 is a wasteful number, since it uses less digits than its factorization.

2163485421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628032 (or 628029 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 2163485421 is about 46513.2821998190. The cubic root of 2163485421 is about 1293.3557285169.

The spelling of 2163485421 in words is "two billion, one hundred sixty-three million, four hundred eighty-five thousand, four hundred twenty-one".