981147486994 has 8 divisors (see below), whose sum is σ = 1473540418620. Its totient is φ = 489967347456.

The previous prime is 981147486959. The next prime is 981147487031. The reversal of 981147486994 is 499684741189.

It can be written as a sum of positive squares in 2 ways, for example, as 980624770225 + 522716769 = 990265^2 + 22863^2 .

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

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, 303195999 + ... + 303199234.

Almost surely, 2^981147486994 is an apocalyptic number.

981147486994 is a deficient number, since it is larger than the sum of its proper divisors (492392931626).

981147486994 is a wasteful number, since it uses less digits than its factorization.

981147486994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606396044.

The product of its digits is 125411328, while the sum is 70.

The spelling of 981147486994 in words is "nine hundred eighty-one billion, one hundred forty-seven million, four hundred eighty-six thousand, nine hundred ninety-four".