4138863556 has 27 divisors (see below), whose sum is σ = 7648803981. Its totient is φ = 1959356304.

The previous prime is 4138863539. The next prime is 4138863559. The reversal of 4138863556 is 6553688314.

The square root of 4138863556 is 64334.

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

4138863556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1576884100 + 2561979456 = 39710^2 + 50616^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4138863559) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2443846 + ... + 2445538.

Almost surely, 2^4138863556 is an apocalyptic number.

4138863556 is the 64334-th square number.

It is an amenable number.

4138863556 is a deficient number, since it is larger than the sum of its proper divisors (3509940425).

4138863556 is an equidigital number, since it uses as much as digits as its factorization.

4138863556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428 (or 1714 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The cubic root of 4138863556 is about 1605.5618360227.

Multiplying 4138863556 by its sum of digits (49), we get a square (202804314244 = 450338²).

The spelling of 4138863556 in words is "four billion, one hundred thirty-eight million, eight hundred sixty-three thousand, five hundred fifty-six".