318858240613 has 4 divisors (see below), whose sum is σ = 347845353408. Its totient is φ = 289871127820.

The previous prime is 318858240557. The next prime is 318858240661. The reversal of 318858240613 is 316042858813.

It is a happy number.

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-318858240613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318858240013) 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, 14493556381 + ... + 14493556402.

It is an arithmetic number, because the mean of its divisors is an integer number (86961338352).

Almost surely, 2^318858240613 is an apocalyptic number.

It is an amenable number.

318858240613 is a deficient number, since it is larger than the sum of its proper divisors (28987112795).

318858240613 is a wasteful number, since it uses less digits than its factorization.

318858240613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28987112794.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 318858240613 in words is "three hundred eighteen billion, eight hundred fifty-eight million, two hundred forty thousand, six hundred thirteen".