1983345 has 32 divisors (see below), whose sum is σ = 3908352. Its totient is φ = 836352.

The previous prime is 1983343. The next prime is 1983347. The reversal of 1983345 is 5433891.

1983345 = T₃₁₉ + T₃₂₀ + ... + T₃₅₃.

It is an interprime number because it is at equal distance from previous prime (1983343) and next prime (1983347).

It is not a de Polignac number, because 1983345 - 2¹ = 1983343 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983341) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 639 + ... + 2091.

It is an arithmetic number, because the mean of its divisors is an integer number (122136).

2^1983345 is an apocalyptic number.

1983345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1983345 is a deficient number, since it is larger than the sum of its proper divisors (1925007).

1983345 is a wasteful number, since it uses less digits than its factorization.

1983345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481.

The product of its digits is 12960, while the sum is 33.

The square root of 1983345 is about 1408.3128203634. The cubic root of 1983345 is about 125.6413965876.

The spelling of 1983345 in words is "one million, nine hundred eighty-three thousand, three hundred forty-five".