2163549648 has 160 divisors (see below), whose sum is σ = 6335594496. Its totient is φ = 631217664.

The previous prime is 2163549643. The next prime is 2163549649. The reversal of 2163549648 is 8469453612.

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

It is a junction number, because it is equal to n+sod(n) for n = 2163549597 and 2163549606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163549643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1822111 + ... + 1823297.

Almost surely, 2^2163549648 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 2163549648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3167797248).

2163549648 is an abundant number, since it is smaller than the sum of its proper divisors (4172044848).

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

2163549648 is a wasteful number, since it uses less digits than its factorization.

2163549648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1355 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 2163549648 is about 46513.9726103888. The cubic root of 2163549648 is about 1293.3685269293.

The spelling of 2163549648 in words is "two billion, one hundred sixty-three million, five hundred forty-nine thousand, six hundred forty-eight".