4638605659 has 4 divisors (see below), whose sum is σ = 4642970416. Its totient is φ = 4634240904.

The previous prime is 4638605623. The next prime is 4638605681. The reversal of 4638605659 is 9565068364.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4638605659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4638605459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180784 + ... + 2182909.

It is an arithmetic number, because the mean of its divisors is an integer number (1160742604).

Almost surely, 2^4638605659 is an apocalyptic number.

4638605659 is a deficient number, since it is larger than the sum of its proper divisors (4364757).

4638605659 is a wasteful number, since it uses less digits than its factorization.

4638605659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364756.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The square root of 4638605659 is about 68107.3098793367. The cubic root of 4638605659 is about 1667.7430948229.

The spelling of 4638605659 in words is "four billion, six hundred thirty-eight million, six hundred five thousand, six hundred fifty-nine".