3881951 has 2 divisors, whose sum is σ = 3881952. Its totient is φ = 3881950.

The previous prime is 3881887. The next prime is 3881953. The reversal of 3881951 is 1591883.

It is a strong prime.

It is an emirp because it is prime and its reverse (1591883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3881951 - 2⁶ = 3881887 is a prime.

Together with 3881953, 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 (3881953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940975 + 1940976.

It is an arithmetic number, because the mean of its divisors is an integer number (1940976).

Almost surely, 2^3881951 is an apocalyptic number.

3881951 is a deficient number, since it is larger than the sum of its proper divisors (1).

3881951 is an equidigital number, since it uses as much as digits as its factorization.

3881951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 35.

The square root of 3881951 is about 1970.2667332115. The cubic root of 3881951 is about 157.1628936671.

The spelling of 3881951 in words is "three million, eight hundred eighty-one thousand, nine hundred fifty-one".