3748981 has 2 divisors, whose sum is σ = 3748982. Its totient is φ = 3748980.

The previous prime is 3748973. The next prime is 3748991. The reversal of 3748981 is 1898473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 1602756 = 1465^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 3748981 - 2³ = 3748973 is a prime.

It is a super-2 number, since 2×3748981² = 28109717076722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3748991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1874490 + 1874491.

It is an arithmetic number, because the mean of its divisors is an integer number (1874491).

Almost surely, 2^3748981 is an apocalyptic number.

It is an amenable number.

3748981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3748981 is an equidigital number, since it uses as much as digits as its factorization.

3748981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 3748981 is about 1936.2285505591. The cubic root of 3748981 is about 155.3475517121.

The spelling of 3748981 in words is "three million, seven hundred forty-eight thousand, nine hundred eighty-one".