4243321982 has 4 divisors (see below), whose sum is σ = 6364982976. Its totient is φ = 2121660990.

The previous prime is 4243321967. The next prime is 4243321991. The reversal of 4243321982 is 2891233424.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060830494 + ... + 1060830497.

It is an arithmetic number, because the mean of its divisors is an integer number (1591245744).

Almost surely, 2^4243321982 is an apocalyptic number.

4243321982 is a deficient number, since it is larger than the sum of its proper divisors (2121660994).

4243321982 is a wasteful number, since it uses less digits than its factorization.

4243321982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121660993.

The product of its digits is 82944, while the sum is 38.

The square root of 4243321982 is about 65140.7858564817. The cubic root of 4243321982 is about 1618.9570564396.

The spelling of 4243321982 in words is "four billion, two hundred forty-three million, three hundred twenty-one thousand, nine hundred eighty-two".