918819 has 12 divisors (see below), whose sum is σ = 1447992. Its totient is φ = 556800.

The previous prime is 918793. The next prime is 918823.

918819 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 918819 - 2⁵ = 918787 is a prime.

It is a super-2 number, since 2×918819² = 1688456709522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (918829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4542 + ... + 4739.

It is an arithmetic number, because the mean of its divisors is an integer number (120666).

2⁹¹⁸⁸¹⁹ is an apocalyptic number.

918819 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

918819 is a deficient number, since it is larger than the sum of its proper divisors (529173).

918819 is a wasteful number, since it uses less digits than its factorization.

918819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9298 (or 9295 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 918819 is about 958.5504681549. The cubic root of 918819 is about 97.2172478664.

The spelling of 918819 in words is "nine hundred eighteen thousand, eight hundred nineteen".