918380 has 24 divisors (see below), whose sum is σ = 1971648. Its totient is φ = 359168.

The previous prime is 918371. The next prime is 918389. The reversal of 918380 is 83819.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (918371) and next prime (918389).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 918380.

It is not an unprimeable number, because it can be changed into a prime (918389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (82152).

2⁹¹⁸³⁸⁰ is an apocalyptic number.

It is an amenable number.

918380 is an abundant number, since it is smaller than the sum of its proper divisors (1053268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918380 is a wasteful number, since it uses less digits than its factorization.

918380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1031 counting only the distinct ones).

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

The square root of 918380 is about 958.3214492017. The cubic root of 918380 is about 97.2017623462.

The spelling of 918380 in words is "nine hundred eighteen thousand, three hundred eighty".