618238068793 has 8 divisors (see below), whose sum is σ = 626790399368. Its totient is φ = 609687990144.

The previous prime is 618238068739. The next prime is 618238068797. The reversal of 618238068793 is 397860832816.

It can be written as a sum of positive squares in 4 ways, for example, as 179786176144 + 438451892649 = 424012^2 + 662157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618238068793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618238068797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6330 + ... + 1111987.

It is an arithmetic number, because the mean of its divisors is an integer number (78348799921).

Almost surely, 2^618238068793 is an apocalyptic number.

It is an amenable number.

618238068793 is a deficient number, since it is larger than the sum of its proper divisors (8552330575).

618238068793 is a wasteful number, since it uses less digits than its factorization.

618238068793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125963.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 618238068793 in words is "six hundred eighteen billion, two hundred thirty-eight million, sixty-eight thousand, seven hundred ninety-three".