1982085850 has 24 divisors (see below), whose sum is σ = 3690470268. Its totient is φ = 792019200.

The previous prime is 1982085839. The next prime is 1982085851. The reversal of 1982085850 is 585802891.

It can be written as a sum of positive squares in 6 ways, for example, as 628655329 + 1353430521 = 25073^2 + 36789^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1982085850.

It is not an unprimeable number, because it can be changed into a prime (1982085851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29970 + ... + 69730.

Almost surely, 2^1982085850 is an apocalyptic number.

1982085850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1982085850 is a deficient number, since it is larger than the sum of its proper divisors (1708384418).

1982085850 is a wasteful number, since it uses less digits than its factorization.

1982085850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40770 (or 40765 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 1982085850 is about 44520.6227494630. The cubic root of 1982085850 is about 1256.1480265074.

The spelling of 1982085850 in words is "one billion, nine hundred eighty-two million, eighty-five thousand, eight hundred fifty".