618149 has 8 divisors (see below), whose sum is σ = 711360. Its totient is φ = 526176.

The previous prime is 618131. The next prime is 618161. The reversal of 618149 is 941816.

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

It is a de Polignac number, because none of the positive numbers 2^k-618149 is a prime.

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

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (88920).

2⁶¹⁸¹⁴⁹ is an apocalyptic number.

It is an amenable number.

618149 is a deficient number, since it is larger than the sum of its proper divisors (93211).

618149 is a wasteful number, since it uses less digits than its factorization.

618149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its digits is 1728, while the sum is 29.

The square root of 618149 is about 786.2245226397. The cubic root of 618149 is about 85.1852476533.

It can be divided in two parts, 618 and 149, that added together give a palindrome (767).

The spelling of 618149 in words is "six hundred eighteen thousand, one hundred forty-nine".