253918 has 12 divisors (see below), whose sum is σ = 443232. Its totient is φ = 108780.

The previous prime is 253909. The next prime is 253919. The reversal of 253918 is 819352.

253918 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253919) by changing a digit.

253918 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1198 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (36936).

2²⁵³⁹¹⁸ is an apocalyptic number.

253918 is a deficient number, since it is larger than the sum of its proper divisors (189314).

253918 is a wasteful number, since it uses less digits than its factorization.

253918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607 (or 2600 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 253918 is about 503.9027683988. The cubic root of 253918 is about 63.3234395133.

The spelling of 253918 in words is "two hundred fifty-three thousand, nine hundred eighteen".