4042643645 has 16 divisors (see below), whose sum is σ = 5236652160. Its totient is φ = 2986826304.

The previous prime is 4042643641. The next prime is 4042643651. The reversal of 4042643645 is 5463462404.

It is a cyclic number.

It is not a de Polignac number, because 4042643645 - 2² = 4042643641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4042643599 and 4042643608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042643641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602759 + ... + 609428.

It is an arithmetic number, because the mean of its divisors is an integer number (327290760).

Almost surely, 2^4042643645 is an apocalyptic number.

It is an amenable number.

4042643645 is a deficient number, since it is larger than the sum of its proper divisors (1194008515).

4042643645 is a wasteful number, since it uses less digits than its factorization.

4042643645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212244.

The product of its (nonzero) digits is 276480, while the sum is 38.

The square root of 4042643645 is about 63581.7870541557. The cubic root of 4042643645 is about 1593.0221708690.

The spelling of 4042643645 in words is "four billion, forty-two million, six hundred forty-three thousand, six hundred forty-five".