918157 has 2 divisors, whose sum is σ = 918158. Its totient is φ = 918156.

The previous prime is 918149. The next prime is 918161. The reversal of 918157 is 751819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470596 + 447561 = 686^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 918157 - 2³ = 918149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459078 + 459079.

It is an arithmetic number, because the mean of its divisors is an integer number (459079).

2⁹¹⁸¹⁵⁷ is an apocalyptic number.

It is an amenable number.

918157 is a deficient number, since it is larger than the sum of its proper divisors (1).

918157 is an equidigital number, since it uses as much as digits as its factorization.

918157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 31.

The square root of 918157 is about 958.2050928690. The cubic root of 918157 is about 97.1938942351.

The spelling of 918157 in words is "nine hundred eighteen thousand, one hundred fifty-seven".