981780682 has 8 divisors (see below), whose sum is σ = 1472826852. Its totient is φ = 490838400.

The previous prime is 981780677. The next prime is 981780713. The reversal of 981780682 is 286087189.

It can be written as a sum of positive squares in 2 ways, for example, as 978500961 + 3279721 = 31281^2 + 1811^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5082 + ... + 44602.

Almost surely, 2^981780682 is an apocalyptic number.

981780682 is a deficient number, since it is larger than the sum of its proper divisors (491046170).

981780682 is a wasteful number, since it uses less digits than its factorization.

981780682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51944.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 981780682 is about 31333.3796772707. The cubic root of 981780682 is about 993.8896334676.

The spelling of 981780682 in words is "nine hundred eighty-one million, seven hundred eighty thousand, six hundred eighty-two".