618338 has 16 divisors (see below), whose sum is σ = 1097280. Its totient is φ = 255696.

The previous prime is 618337. The next prime is 618347. The reversal of 618338 is 833816.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 618338.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (68580).

2⁶¹⁸³³⁸ is an apocalyptic number.

618338 is a deficient number, since it is larger than the sum of its proper divisors (478942).

618338 is a wasteful number, since it uses less digits than its factorization.

618338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its digits is 3456, while the sum is 29.

The square root of 618338 is about 786.3447081274. The cubic root of 618338 is about 85.1939286085.

The spelling of 618338 in words is "six hundred eighteen thousand, three hundred thirty-eight".