981480688186 has 8 divisors (see below), whose sum is σ = 1472225415444. Its totient is φ = 490738883040.

The previous prime is 981480688117. The next prime is 981480688187. The reversal of 981480688186 is 681886084189.

It can be written as a sum of positive squares in 2 ways, for example, as 670300800961 + 311179887225 = 818719^2 + 557835^2 .

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

It is not an unprimeable number, because it can be changed into a prime (981480688187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577806 + ... + 1515526.

Almost surely, 2^981480688186 is an apocalyptic number.

981480688186 is a deficient number, since it is larger than the sum of its proper divisors (490744727258).

981480688186 is a wasteful number, since it uses less digits than its factorization.

981480688186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461056.

The product of its (nonzero) digits is 42467328, while the sum is 67.

The spelling of 981480688186 in words is "nine hundred eighty-one billion, four hundred eighty million, six hundred eighty-eight thousand, one hundred eighty-six".