918653 has 2 divisors, whose sum is σ = 918654. Its totient is φ = 918652.

The previous prime is 918647. The next prime is 918677. The reversal of 918653 is 356819.

918653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 38809 = 938^2 + 197^2 .

It is an emirp because it is prime and its reverse (356819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 918653 - 2⁸ = 918397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459326 + 459327.

It is an arithmetic number, because the mean of its divisors is an integer number (459327).

2⁹¹⁸⁶⁵³ is an apocalyptic number.

It is an amenable number.

918653 is a deficient number, since it is larger than the sum of its proper divisors (1).

918653 is an equidigital number, since it uses as much as digits as its factorization.

918653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 918653 is about 958.4638751669. The cubic root of 918653 is about 97.2113928739.

The spelling of 918653 in words is "nine hundred eighteen thousand, six hundred fifty-three".