1983278 has 8 divisors (see below), whose sum is σ = 3245400. Its totient is φ = 901480.

The previous prime is 1983257. The next prime is 1983301. The reversal of 1983278 is 8723891.

It is a sphenic number, since it is the product of 3 distinct 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 in 3 ways as a sum of consecutive naturals, for example, 45053 + ... + 45096.

It is an arithmetic number, because the mean of its divisors is an integer number (405675).

2^1983278 is an apocalyptic number.

1983278 is a deficient number, since it is larger than the sum of its proper divisors (1262122).

1983278 is a wasteful number, since it uses less digits than its factorization.

1983278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90162.

The product of its digits is 24192, while the sum is 38.

The square root of 1983278 is about 1408.2890328338. The cubic root of 1983278 is about 125.6399817945.

The spelling of 1983278 in words is "one million, nine hundred eighty-three thousand, two hundred seventy-eight".