1983481 has 4 divisors (see below), whose sum is σ = 1990132. Its totient is φ = 1976832.

The previous prime is 1983479. The next prime is 1983491. The reversal of 1983481 is 1843891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 1742400 = 491^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1983481 - 2¹ = 1983479 is a prime.

It is a super-2 number, since 2×1983481² = 7868393754722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

1983481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1983491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856 + ... + 3481.

It is an arithmetic number, because the mean of its divisors is an integer number (497533).

2^1983481 is an apocalyptic number.

It is an amenable number.

1983481 is a deficient number, since it is larger than the sum of its proper divisors (6651).

1983481 is an equidigital number, since it uses as much as digits as its factorization.

1983481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6650.

The product of its digits is 6912, while the sum is 34.

The square root of 1983481 is about 1408.3611042627. The cubic root of 1983481 is about 125.6442683084.

The spelling of 1983481 in words is "one million, nine hundred eighty-three thousand, four hundred eighty-one".