918841477 has 2 divisors, whose sum is σ = 918841478. Its totient is φ = 918841476.

The previous prime is 918841453. The next prime is 918841499. The reversal of 918841477 is 774148819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 509224356 + 409617121 = 22566^2 + 20239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918841477 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 918841477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918844477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459420738 + 459420739.

It is an arithmetic number, because the mean of its divisors is an integer number (459420739).

Almost surely, 2^918841477 is an apocalyptic number.

It is an amenable number.

918841477 is a deficient number, since it is larger than the sum of its proper divisors (1).

918841477 is an equidigital number, since it uses as much as digits as its factorization.

918841477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 49.

The square root of 918841477 is about 30312.3980740554. The cubic root of 918841477 is about 972.1804059937.

The spelling of 918841477 in words is "nine hundred eighteen million, eight hundred forty-one thousand, four hundred seventy-seven".