391168082 has 8 divisors (see below), whose sum is σ = 592135500. Its totient is φ = 193789584.

The previous prime is 391168049. The next prime is 391168093. The reversal of 391168082 is 280861193.

It can be written as a sum of positive squares in 2 ways, for example, as 370909081 + 20259001 = 19259^2 + 4501^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896957 + ... + 897392.

Almost surely, 2^391168082 is an apocalyptic number.

391168082 is a deficient number, since it is larger than the sum of its proper divisors (200967418).

391168082 is a wasteful number, since it uses less digits than its factorization.

391168082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794460.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 391168082 is about 19777.9696126776. The cubic root of 391168082 is about 731.3430470441.

The spelling of 391168082 in words is "three hundred ninety-one million, one hundred sixty-eight thousand, eighty-two".