918464891 has 2 divisors, whose sum is σ = 918464892. Its totient is φ = 918464890.

The previous prime is 918464873. The next prime is 918464893. The reversal of 918464891 is 198464819.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918464891 is a prime.

Together with 918464893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (918464893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459232445 + 459232446.

It is an arithmetic number, because the mean of its divisors is an integer number (459232446).

Almost surely, 2^918464891 is an apocalyptic number.

918464891 is a deficient number, since it is larger than the sum of its proper divisors (1).

918464891 is an equidigital number, since it uses as much as digits as its factorization.

918464891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 50.

The square root of 918464891 is about 30306.1856887336. The cubic root of 918464891 is about 972.0475722143.

The spelling of 918464891 in words is "nine hundred eighteen million, four hundred sixty-four thousand, eight hundred ninety-one".