381973982 has 16 divisors (see below), whose sum is σ = 630165312. Its totient is φ = 172544160.

The previous prime is 381973973. The next prime is 381974017. The reversal of 381973982 is 289379183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 381973982.

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 7 ways as a sum of consecutive naturals, for example, 155069 + ... + 157512.

It is an arithmetic number, because the mean of its divisors is an integer number (39385332).

Almost surely, 2^381973982 is an apocalyptic number.

381973982 is a deficient number, since it is larger than the sum of its proper divisors (248191330).

381973982 is a wasteful number, since it uses less digits than its factorization.

381973982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312643.

The product of its digits is 653184, while the sum is 50.

The square root of 381973982 is about 19544.1546760150. The cubic root of 381973982 is about 725.5676771509.

The spelling of 381973982 in words is "three hundred eighty-one million, nine hundred seventy-three thousand, nine hundred eighty-two".