1982654840 has 16 divisors (see below), whose sum is σ = 4460973480. Its totient is φ = 793061920.

The previous prime is 1982654837. The next prime is 1982654851. The reversal of 1982654840 is 484562891.

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, 24783146 + ... + 24783225.

Almost surely, 2^1982654840 is an apocalyptic number.

1982654840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1982654840 is an abundant number, since it is smaller than the sum of its proper divisors (2478318640).

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

1982654840 is a wasteful number, since it uses less digits than its factorization.

1982654840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49566382 (or 49566378 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 1982654840 is about 44527.0124755749. The cubic root of 1982654840 is about 1256.2682142521.

The spelling of 1982654840 in words is "one billion, nine hundred eighty-two million, six hundred fifty-four thousand, eight hundred forty".