1982236544 has 32 divisors (see below), whose sum is σ = 3996586440. Its totient is φ = 979171840.

The previous prime is 1982236537. The next prime is 1982236547. The reversal of 1982236544 is 4456322891.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1982236495 and 1982236504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982236547) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 82667 + ... + 103914.

Almost surely, 2^1982236544 is an apocalyptic number.

It is an amenable number.

1982236544 is an abundant number, since it is smaller than the sum of its proper divisors (2014349896).

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

1982236544 is an equidigital number, since it uses as much as digits as its factorization.

1982236544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186678 (or 186666 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 1982236544 is about 44522.3151239915. The cubic root of 1982236544 is about 1256.1798598365.

The spelling of 1982236544 in words is "one billion, nine hundred eighty-two million, two hundred thirty-six thousand, five hundred forty-four".