1982251105 has 8 divisors (see below), whose sum is σ = 2389976064. Its totient is φ = 1578284400.

The previous prime is 1982251031. The next prime is 1982251111. The reversal of 1982251105 is 5011522891.

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

It is not a de Polignac number, because 1982251105 - 2²⁹ = 1445380193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938401 + ... + 940510.

It is an arithmetic number, because the mean of its divisors is an integer number (298747008).

Almost surely, 2^1982251105 is an apocalyptic number.

It is an amenable number.

1982251105 is a deficient number, since it is larger than the sum of its proper divisors (407724959).

1982251105 is a wasteful number, since it uses less digits than its factorization.

1982251105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879127.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 1982251105 is about 44522.4786484311. The cubic root of 1982251105 is about 1256.1829356870.

Adding to 1982251105 its reverse (5011522891), we get a palindrome (6993773996).

The spelling of 1982251105 in words is "one billion, nine hundred eighty-two million, two hundred fifty-one thousand, one hundred five".