3743981 has 2 divisors, whose sum is σ = 3743982. Its totient is φ = 3743980.

The previous prime is 3743959. The next prime is 3743983. The reversal of 3743981 is 1893473.

3743981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3575881 + 168100 = 1891^2 + 410^2 .

It is an emirp because it is prime and its reverse (1893473) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3743981 is a prime.

It is a super-2 number, since 2×3743981² = 28034787456722, which contains 22 as substring.

Together with 3743983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3743983) 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 as a sum of consecutive naturals, namely, 1871990 + 1871991.

It is an arithmetic number, because the mean of its divisors is an integer number (1871991).

Almost surely, 2^3743981 is an apocalyptic number.

It is an amenable number.

3743981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3743981 is an equidigital number, since it uses as much as digits as its factorization.

3743981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 3743981 is about 1934.9369498772. The cubic root of 3743981 is about 155.2784588639.

The spelling of 3743981 in words is "three million, seven hundred forty-three thousand, nine hundred eighty-one".