851486782 has 4 divisors (see below), whose sum is σ = 1277230176. Its totient is φ = 425743390.

The previous prime is 851486771. The next prime is 851486789. The reversal of 851486782 is 287684158.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851486789) by changing a digit.

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 as a sum of consecutive naturals, namely, 212871694 + ... + 212871697.

It is an arithmetic number, because the mean of its divisors is an integer number (319307544).

Almost surely, 2^851486782 is an apocalyptic number.

851486782 is a deficient number, since it is larger than the sum of its proper divisors (425743394).

851486782 is a wasteful number, since it uses less digits than its factorization.

851486782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425743393.

The product of its digits is 860160, while the sum is 49.

The square root of 851486782 is about 29180.2464348744. The cubic root of 851486782 is about 947.8202218926.

The spelling of 851486782 in words is "eight hundred fifty-one million, four hundred eighty-six thousand, seven hundred eighty-two".