1983213 has 6 divisors (see below), whose sum is σ = 2864654. Its totient is φ = 1322136.

The previous prime is 1983197. The next prime is 1983227. The reversal of 1983213 is 3123891.

It can be written as a sum of positive squares in only one way, i.e., 1671849 + 311364 = 1293^2 + 558^2 .

It is not a de Polignac number, because 1983213 - 2⁴ = 1983197 is a prime.

It is a Duffinian number.

1983213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110170 + ... + 110187.

2^1983213 is an apocalyptic number.

It is an amenable number.

1983213 is a deficient number, since it is larger than the sum of its proper divisors (881441).

1983213 is a wasteful number, since it uses less digits than its factorization.

1983213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220363 (or 220360 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1983213 is about 1408.2659549957. The cubic root of 1983213 is about 125.6386092036.

The spelling of 1983213 in words is "one million, nine hundred eighty-three thousand, two hundred thirteen".