918813149 has 2 divisors, whose sum is σ = 918813150. Its totient is φ = 918813148.

The previous prime is 918813089. The next prime is 918813151. The reversal of 918813149 is 941318819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 906612100 + 12201049 = 30110^2 + 3493^2 .

It is a cyclic number.

It is not a de Polignac number, because 918813149 - 2⁸ = 918812893 is a prime.

Together with 918813151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918813179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459406574 + 459406575.

It is an arithmetic number, because the mean of its divisors is an integer number (459406575).

Almost surely, 2^918813149 is an apocalyptic number.

It is an amenable number.

918813149 is a deficient number, since it is larger than the sum of its proper divisors (1).

918813149 is an equidigital number, since it uses as much as digits as its factorization.

918813149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 44.

The square root of 918813149 is about 30311.9308029033. The cubic root of 918813149 is about 972.1704150757.

The spelling of 918813149 in words is "nine hundred eighteen million, eight hundred thirteen thousand, one hundred forty-nine".