918149 has 2 divisors, whose sum is σ = 918150. Its totient is φ = 918148.

The previous prime is 918143. The next prime is 918157. The reversal of 918149 is 941819.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 889249 + 28900 = 943^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 918149 - 2⁸ = 917893 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459074 + 459075.

It is an arithmetic number, because the mean of its divisors is an integer number (459075).

2⁹¹⁸¹⁴⁹ is an apocalyptic number.

It is an amenable number.

918149 is a deficient number, since it is larger than the sum of its proper divisors (1).

918149 is an equidigital number, since it uses as much as digits as its factorization.

918149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 32.

The square root of 918149 is about 958.2009183882. The cubic root of 918149 is about 97.1936119473.

The spelling of 918149 in words is "nine hundred eighteen thousand, one hundred forty-nine".