6618839361 has 4 divisors (see below), whose sum is σ = 8825119152. Its totient is φ = 4412559572.

The previous prime is 6618839317. The next prime is 6618839393. The reversal of 6618839361 is 1639388166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6618839361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6618839761) 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, 1103139891 + ... + 1103139896.

It is an arithmetic number, because the mean of its divisors is an integer number (2206279788).

Almost surely, 2^6618839361 is an apocalyptic number.

It is an amenable number.

6618839361 is a deficient number, since it is larger than the sum of its proper divisors (2206279791).

6618839361 is a wasteful number, since it uses less digits than its factorization.

6618839361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206279790.

The product of its digits is 1119744, while the sum is 51.

The square root of 6618839361 is about 81356.2496738880. The cubic root of 6618839361 is about 1877.5605300097.

The spelling of 6618839361 in words is "six billion, six hundred eighteen million, eight hundred thirty-nine thousand, three hundred sixty-one".