1982985 has 8 divisors (see below), whose sum is σ = 3172800. Its totient is φ = 1057584.

The previous prime is 1982969. The next prime is 1982987. The reversal of 1982985 is 5892891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1982985 - 2⁴ = 1982969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1982987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66085 + ... + 66114.

It is an arithmetic number, because the mean of its divisors is an integer number (396600).

2^1982985 is an apocalyptic number.

1982985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1982985 is a deficient number, since it is larger than the sum of its proper divisors (1189815).

1982985 is a wasteful number, since it uses less digits than its factorization.

1982985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132207.

The product of its digits is 51840, while the sum is 42.

The square root of 1982985 is about 1408.1850020505. The cubic root of 1982985 is about 125.6337943399.

The spelling of 1982985 in words is "one million, nine hundred eighty-two thousand, nine hundred eighty-five".