3781983 has 4 divisors (see below), whose sum is σ = 5042648. Its totient is φ = 2521320.

The previous prime is 3781961. The next prime is 3781993. The reversal of 3781983 is 3891873.

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

It is not a de Polignac number, because 3781983 - 2⁵ = 3781951 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781903) 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, 630328 + ... + 630333.

It is an arithmetic number, because the mean of its divisors is an integer number (1260662).

Almost surely, 2^3781983 is an apocalyptic number.

3781983 is a deficient number, since it is larger than the sum of its proper divisors (1260665).

3781983 is a wasteful number, since it uses less digits than its factorization.

3781983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260664.

The product of its digits is 36288, while the sum is 39.

The square root of 3781983 is about 1944.7321152282. The cubic root of 3781983 is about 155.8020582824.

The spelling of 3781983 in words is "three million, seven hundred eighty-one thousand, nine hundred eighty-three".