2163738256 has 45 divisors (see below), whose sum is σ = 4352642203. Its totient is φ = 1041958400.

The previous prime is 2163738233. The next prime is 2163738263. The reversal of 2163738256 is 6528373612.

The square root of 2163738256 is 46516.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 919059856 + 1244678400 = 30316^2 + 35280^2 .

It is a Duffinian number.

Its product of digits (362880) is a multiple of the sum of its prime divisors (432).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5395656 + ... + 5396056.

Almost surely, 2^2163738256 is an apocalyptic number.

2163738256 is the 46516-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2163738256

2163738256 is an abundant number, since it is smaller than the sum of its proper divisors (2188903947).

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

2163738256 is an frugal number, since it uses more digits than its factorization.

2163738256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 432 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The cubic root of 2163738256 is about 1293.4061090825.

The spelling of 2163738256 in words is "two billion, one hundred sixty-three million, seven hundred thirty-eight thousand, two hundred fifty-six".