918446221439998 has 8 divisors (see below), whose sum is σ = 1377669509701992. Its totient is φ = 459223051539336.

The previous prime is 918446221439947. The next prime is 918446221440001. The reversal of 918446221439998 is 899934122644819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6627040 + ... + 43368307.

It is an arithmetic number, because the mean of its divisors is an integer number (172208688712749).

Almost surely, 2^{918446221439998} is an apocalyptic number.

918446221439998 is a deficient number, since it is larger than the sum of its proper divisors (459223288261994).

918446221439998 is a wasteful number, since it uses less digits than its factorization.

918446221439998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59180666.

The product of its digits is 1934917632, while the sum is 79.

The spelling of 918446221439998 in words is "nine hundred eighteen trillion, four hundred forty-six billion, two hundred twenty-one million, four hundred thirty-nine thousand, nine hundred ninety-eight".