1982020970 has 16 divisors (see below), whose sum is σ = 3602962728. Its totient is φ = 784958400.

The previous prime is 1982020951. The next prime is 1982020981. The reversal of 1982020970 is 790202891.

It can be written as a sum of positive squares in 4 ways, for example, as 1808545729 + 173475241 = 42527^2 + 13171^2 .

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 980189 + ... + 982208.

Almost surely, 2^1982020970 is an apocalyptic number.

1982020970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1982020970 is a deficient number, since it is larger than the sum of its proper divisors (1620941758).

1982020970 is a wasteful number, since it uses less digits than its factorization.

1982020970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962505.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1982020970 is about 44519.8940924167. The cubic root of 1982020970 is about 1256.1343204456.

The spelling of 1982020970 in words is "one billion, nine hundred eighty-two million, twenty thousand, nine hundred seventy".