861910982 has 8 divisors (see below), whose sum is σ = 1368917496. Its totient is φ = 405605152.

The previous prime is 861910939. The next prime is 861910997. The reversal of 861910982 is 289019168.

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, 12675128 + ... + 12675195.

It is an arithmetic number, because the mean of its divisors is an integer number (171114687).

Almost surely, 2^861910982 is an apocalyptic number.

861910982 is a deficient number, since it is larger than the sum of its proper divisors (507006514).

861910982 is a wasteful number, since it uses less digits than its factorization.

861910982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25350342.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 861910982 is about 29358.3204901098. The cubic root of 861910982 is about 951.6723937783.

The spelling of 861910982 in words is "eight hundred sixty-one million, nine hundred ten thousand, nine hundred eighty-two".