918348091 has 2 divisors, whose sum is σ = 918348092. Its totient is φ = 918348090.

The previous prime is 918348089. The next prime is 918348131. The reversal of 918348091 is 190843819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 918348091 - 2¹ = 918348089 is a prime.

Together with 918348089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (918348391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459174045 + 459174046.

It is an arithmetic number, because the mean of its divisors is an integer number (459174046).

Almost surely, 2^918348091 is an apocalyptic number.

918348091 is a deficient number, since it is larger than the sum of its proper divisors (1).

918348091 is an equidigital number, since it uses as much as digits as its factorization.

918348091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 918348091 is about 30304.2586281202. The cubic root of 918348091 is about 972.0063657873.

The spelling of 918348091 in words is "nine hundred eighteen million, three hundred forty-eight thousand, ninety-one".