1983291 has 4 divisors (see below), whose sum is σ = 2644392. Its totient is φ = 1322192.

The previous prime is 1983257. The next prime is 1983301. The reversal of 1983291 is 1923891.

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

It is a cyclic number.

It is not a de Polignac number, because 1983291 - 2⁶ = 1983227 is a prime.

It is a D-number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330546 + ... + 330551.

It is an arithmetic number, because the mean of its divisors is an integer number (661098).

2^1983291 is an apocalyptic number.

1983291 is a deficient number, since it is larger than the sum of its proper divisors (661101).

1983291 is an equidigital number, since it uses as much as digits as its factorization.

1983291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661100.

The product of its digits is 3888, while the sum is 33.

The square root of 1983291 is about 1408.2936483561. The cubic root of 1983291 is about 125.6402563091.

The spelling of 1983291 in words is "one million, nine hundred eighty-three thousand, two hundred ninety-one".