918858461 has 2 divisors, whose sum is σ = 918858462. Its totient is φ = 918858460.

The previous prime is 918858439. The next prime is 918858463. The reversal of 918858461 is 164858819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894907225 + 23951236 = 29915^2 + 4894^2 .

It is a cyclic number.

It is not a de Polignac number, because 918858461 - 2⁶ = 918858397 is a prime.

Together with 918858463, 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 (918858463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459429230 + 459429231.

It is an arithmetic number, because the mean of its divisors is an integer number (459429231).

Almost surely, 2^918858461 is an apocalyptic number.

It is an amenable number.

918858461 is a deficient number, since it is larger than the sum of its proper divisors (1).

918858461 is an equidigital number, since it uses as much as digits as its factorization.

918858461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 50.

The square root of 918858461 is about 30312.6782221565. The cubic root of 918858461 is about 972.1863959316.

The spelling of 918858461 in words is "nine hundred eighteen million, eight hundred fifty-eight thousand, four hundred sixty-one".