1983158 has 4 divisors (see below), whose sum is σ = 2974740. Its totient is φ = 991578.

The previous prime is 1983143. The next prime is 1983197. The reversal of 1983158 is 8513891.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495788 + ... + 495791.

It is an arithmetic number, because the mean of its divisors is an integer number (743685).

2^1983158 is an apocalyptic number.

1983158 is a deficient number, since it is larger than the sum of its proper divisors (991582).

1983158 is an equidigital number, since it uses as much as digits as its factorization.

1983158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991581.

The product of its digits is 8640, while the sum is 35.

The square root of 1983158 is about 1408.2464272989. The cubic root of 1983158 is about 125.6374477571.

The spelling of 1983158 in words is "one million, nine hundred eighty-three thousand, one hundred fifty-eight".