981449414018 has 8 divisors (see below), whose sum is σ = 1522938745980. Its totient is φ = 473803165360.

The previous prime is 981449413999. The next prime is 981449414059. The reversal of 981449414018 is 810414944189.

It can be written as a sum of positive squares in 2 ways, for example, as 946209489289 + 35239924729 = 972733^2 + 187723^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8460770753 + ... + 8460770868.

Almost surely, 2^981449414018 is an apocalyptic number.

981449414018 is a deficient number, since it is larger than the sum of its proper divisors (541489331962).

981449414018 is a wasteful number, since it uses less digits than its factorization.

981449414018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16921541652.

The product of its (nonzero) digits is 1327104, while the sum is 53.

The spelling of 981449414018 in words is "nine hundred eighty-one billion, four hundred forty-nine million, four hundred fourteen thousand, eighteen".