1893993982 has 8 divisors (see below), whose sum is σ = 2848409856. Its totient is φ = 944524032.

The previous prime is 1893993923. The next prime is 1893994001. The reversal of 1893993982 is 2893993981.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1893993982.

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, 1235523 + ... + 1237054.

It is an arithmetic number, because the mean of its divisors is an integer number (356051232).

Almost surely, 2^1893993982 is an apocalyptic number.

1893993982 is a deficient number, since it is larger than the sum of its proper divisors (954415874).

1893993982 is a wasteful number, since it uses less digits than its factorization.

1893993982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472962.

The product of its digits is 7558272, while the sum is 61.

The square root of 1893993982 is about 43520.0411534732. The cubic root of 1893993982 is about 1237.2558946058.

Subtracting 1893993982 from its reverse (2893993981), we obtain a palindrome (999999999).

The spelling of 1893993982 in words is "one billion, eight hundred ninety-three million, nine hundred ninety-three thousand, nine hundred eighty-two".