3989190185982 has 32 divisors (see below), whose sum is σ = 8865351936000. Its totient is φ = 1329657333624.

The previous prime is 3989190185947. The next prime is 3989190185983. The reversal of 3989190185982 is 2895810919893.

It is a happy number.

3989190185982 is a `hidden beast` number, since 3 + 9 + 8 + 9 + 19 + 0 + 18 + 598 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 3989190185982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989190185983) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1019232 + ... + 3002867.

It is an arithmetic number, because the mean of its divisors is an integer number (277042248000).

Almost surely, 2^{3989190185982} is an apocalyptic number.

3989190185982 is an abundant number, since it is smaller than the sum of its proper divisors (4876161750018).

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

3989190185982 is a wasteful number, since it uses less digits than its factorization.

3989190185982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040477 (or 4040471 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 72.

The spelling of 3989190185982 in words is "three trillion, nine hundred eighty-nine billion, one hundred ninety million, one hundred eighty-five thousand, nine hundred eighty-two".