4639293643 has 4 divisors (see below), whose sum is σ = 4681856080. Its totient is φ = 4596731208.

The previous prime is 4639293641. The next prime is 4639293671. The reversal of 4639293643 is 3463929364.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4639293643 - 2¹ = 4639293641 is a prime.

It is a super-2 number, since 2×4639293643² = 43046091011960422898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4639293641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21281055 + ... + 21281272.

It is an arithmetic number, because the mean of its divisors is an integer number (1170464020).

Almost surely, 2^4639293643 is an apocalyptic number.

4639293643 is a deficient number, since it is larger than the sum of its proper divisors (42562437).

4639293643 is a wasteful number, since it uses less digits than its factorization.

4639293643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42562436.

The product of its digits is 2519424, while the sum is 49.

The square root of 4639293643 is about 68112.3604274584. The cubic root of 4639293643 is about 1667.8255422887.

The spelling of 4639293643 in words is "four billion, six hundred thirty-nine million, two hundred ninety-three thousand, six hundred forty-three".