3738281 has 2 divisors, whose sum is σ = 3738282. Its totient is φ = 3738280.

The previous prime is 3738277. The next prime is 3738289. The reversal of 3738281 is 1828373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2706025 + 1032256 = 1645^2 + 1016^2 .

It is an emirp because it is prime and its reverse (1828373) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3738281 - 2² = 3738277 is a prime.

It is a super-2 number, since 2×3738281² = 27949489669922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3738289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1869140 + 1869141.

It is an arithmetic number, because the mean of its divisors is an integer number (1869141).

Almost surely, 2^3738281 is an apocalyptic number.

It is an amenable number.

3738281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3738281 is an equidigital number, since it uses as much as digits as its factorization.

3738281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 3738281 is about 1933.4634726314. The cubic root of 3738281 is about 155.1996179402.

The spelling of 3738281 in words is "three million, seven hundred thirty-eight thousand, two hundred eighty-one".