1982965 has 16 divisors (see below), whose sum is σ = 2585520. Its totient is φ = 1454080.

The previous prime is 1982957. The next prime is 1982969. The reversal of 1982965 is 5692891.

It can be written as a sum of positive squares in 8 ways, for example, as 285156 + 1697809 = 534^2 + 1303^2 .

It is not a de Polignac number, because 1982965 - 2³ = 1982957 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3201 + ... + 3769.

It is an arithmetic number, because the mean of its divisors is an integer number (161595).

2^1982965 is an apocalyptic number.

It is an amenable number.

1982965 is a deficient number, since it is larger than the sum of its proper divisors (602555).

1982965 is a wasteful number, since it uses less digits than its factorization.

1982965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its digits is 38880, while the sum is 40.

The square root of 1982965 is about 1408.1779006929. The cubic root of 1982965 is about 125.6333719658.

The spelling of 1982965 in words is "one million, nine hundred eighty-two thousand, nine hundred sixty-five".