618109 has 8 divisors (see below), whose sum is σ = 647168. Its totient is φ = 589680.

The previous prime is 618083. The next prime is 618119. The reversal of 618109 is 901816.

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

It is a cyclic number.

It is not a de Polignac number, because 618109 - 2¹⁵ = 585341 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

618109 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3859 + ... + 4015.

It is an arithmetic number, because the mean of its divisors is an integer number (80896).

2⁶¹⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

618109 is a deficient number, since it is larger than the sum of its proper divisors (29059).

618109 is a wasteful number, since it uses less digits than its factorization.

618109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 618109 is about 786.1990842020. The cubic root of 618109 is about 85.1834101873.

It can be divided in two parts, 618 and 109, that added together give a palindrome (727).

The spelling of 618109 in words is "six hundred eighteen thousand, one hundred nine".