618493 has 4 divisors (see below), whose sum is σ = 645408. Its totient is φ = 591580.

The previous prime is 618463. The next prime is 618509. The reversal of 618493 is 394816.

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 not a de Polignac number, because 618493 - 2¹³ = 610301 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618413) 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, 13423 + ... + 13468.

It is an arithmetic number, because the mean of its divisors is an integer number (161352).

2⁶¹⁸⁴⁹³ is an apocalyptic number.

It is an amenable number.

618493 is a deficient number, since it is larger than the sum of its proper divisors (26915).

618493 is a wasteful number, since it uses less digits than its factorization.

618493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26914.

The product of its digits is 5184, while the sum is 31.

The square root of 618493 is about 786.4432592374. The cubic root of 618493 is about 85.2010465902.

It can be divided in two parts, 618 and 493, that added together give a palindrome (1111).

The spelling of 618493 in words is "six hundred eighteen thousand, four hundred ninety-three".