3851281 has 16 divisors (see below), whose sum is σ = 4838400. Its totient is φ = 2989008.

The previous prime is 3851279. The next prime is 3851291. The reversal of 3851281 is 1821583.

It is a cyclic number.

It is not a de Polignac number, because 3851281 - 2¹ = 3851279 is a prime.

It is a super-2 number, since 2×3851281² = 29664730681922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3851291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2430 + ... + 3688.

It is an arithmetic number, because the mean of its divisors is an integer number (302400).

Almost surely, 2^3851281 is an apocalyptic number.

It is an amenable number.

3851281 is a deficient number, since it is larger than the sum of its proper divisors (987119).

3851281 is a wasteful number, since it uses less digits than its factorization.

3851281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its digits is 1920, while the sum is 28.

The square root of 3851281 is about 1962.4680889125. The cubic root of 3851281 is about 156.7479016361.

The spelling of 3851281 in words is "three million, eight hundred fifty-one thousand, two hundred eighty-one".