641183982 has 8 divisors (see below), whose sum is σ = 1282367976. Its totient is φ = 213727992.

The previous prime is 641183947. The next prime is 641183999. The reversal of 641183982 is 289381146.

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

641183982 is an admirable number.

It is a super-2 number, since 2×641183982² = 822233797546752648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53431993 + ... + 53432004.

It is an arithmetic number, because the mean of its divisors is an integer number (160295997).

Almost surely, 2^641183982 is an apocalyptic number.

641183982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641183982 is a wasteful number, since it uses less digits than its factorization.

641183982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106864002.

The product of its digits is 82944, while the sum is 42.

The square root of 641183982 is about 25321.6109677090. The cubic root of 641183982 is about 862.3049677901.

The spelling of 641183982 in words is "six hundred forty-one million, one hundred eighty-three thousand, nine hundred eighty-two".