3814544643 has 64 divisors (see below), whose sum is σ = 6667702272. Its totient is φ = 1882368000.

The previous prime is 3814544621. The next prime is 3814544647. The reversal of 3814544643 is 3464454183.

It is a happy number.

3814544643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 61762²-1.

It is not a de Polignac number, because 3814544643 - 2¹⁰ = 3814543619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3814544595 and 3814544604.

It is not an unprimeable number, because it can be changed into a prime (3814544647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 800518 + ... + 805268.

It is an arithmetic number, because the mean of its divisors is an integer number (104182848).

Almost surely, 2^3814544643 is an apocalyptic number.

3814544643 is a deficient number, since it is larger than the sum of its proper divisors (2853157629).

3814544643 is a wasteful number, since it uses less digits than its factorization.

3814544643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964.

The product of its digits is 552960, while the sum is 42.

The square root of 3814544643 is about 61761.9999919044. Note that the first 5 decimals coincide. The cubic root of 3814544643 is about 1562.4791616464.

The spelling of 3814544643 in words is "three billion, eight hundred fourteen million, five hundred forty-four thousand, six hundred forty-three".