1981991482 has 8 divisors (see below), whose sum is σ = 2974227552. Its totient is φ = 990582300.

The previous prime is 1981991423. The next prime is 1981991497. The reversal of 1981991482 is 2841991891.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200694 + ... + 210337.

It is an arithmetic number, because the mean of its divisors is an integer number (371778444).

Almost surely, 2^1981991482 is an apocalyptic number.

1981991482 is a deficient number, since it is larger than the sum of its proper divisors (992236070).

1981991482 is a wasteful number, since it uses less digits than its factorization.

1981991482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413444.

The product of its digits is 373248, while the sum is 52.

The square root of 1981991482 is about 44519.5629133980. The cubic root of 1981991482 is about 1256.1280909332.

The spelling of 1981991482 in words is "one billion, nine hundred eighty-one million, nine hundred ninety-one thousand, four hundred eighty-two".