1982658012 has 12 divisors (see below), whose sum is σ = 4626202056. Its totient is φ = 660886000.

The previous prime is 1982657953. The next prime is 1982658017. The reversal of 1982658012 is 2108562891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982658017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82610739 + ... + 82610762.

It is an arithmetic number, because the mean of its divisors is an integer number (385516838).

Almost surely, 2^1982658012 is an apocalyptic number.

1982658012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1982658012 is an abundant number, since it is smaller than the sum of its proper divisors (2643544044).

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

1982658012 is a wasteful number, since it uses less digits than its factorization.

1982658012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165221508 (or 165221506 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1982658012 is about 44527.0480943887. The cubic root of 1982658012 is about 1256.2688842091.

The spelling of 1982658012 in words is "one billion, nine hundred eighty-two million, six hundred fifty-eight thousand, twelve".