3785981 has 8 divisors (see below), whose sum is σ = 3919104. Its totient is φ = 3654880.

The previous prime is 3785963. The next prime is 3785987. The reversal of 3785981 is 1895873.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3785981 is a prime.

It is a super-2 number, since 2×3785981² = 28667304264722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3785987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3956 + ... + 4818.

It is an arithmetic number, because the mean of its divisors is an integer number (489888).

Almost surely, 2^3785981 is an apocalyptic number.

It is an amenable number.

3785981 is a deficient number, since it is larger than the sum of its proper divisors (133123).

3785981 is a wasteful number, since it uses less digits than its factorization.

3785981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011.

The product of its digits is 60480, while the sum is 41.

The square root of 3785981 is about 1945.7597487871. The cubic root of 3785981 is about 155.8569393035.

The spelling of 3785981 in words is "three million, seven hundred eighty-five thousand, nine hundred eighty-one".