918998361 has 24 divisors (see below), whose sum is σ = 1341835040. Its totient is φ = 606056256.

The previous prime is 918998347. The next prime is 918998363. The reversal of 918998361 is 163899819.

It is not a de Polignac number, because 918998361 - 2²² = 914804057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 918998298 and 918998307.

It is not an unprimeable number, because it can be changed into a prime (918998363) 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 in 23 ways as a sum of consecutive naturals, for example, 390390 + ... + 392736.

Almost surely, 2^918998361 is an apocalyptic number.

It is an amenable number.

918998361 is a deficient number, since it is larger than the sum of its proper divisors (422836679).

918998361 is a wasteful number, since it uses less digits than its factorization.

918998361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805 (or 2802 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 918998361 is about 30314.9857496255. The cubic root of 918998361 is about 972.2357332273.

The spelling of 918998361 in words is "nine hundred eighteen million, nine hundred ninety-eight thousand, three hundred sixty-one".