3791881 has 4 divisors (see below), whose sum is σ = 3810064. Its totient is φ = 3773700.

The previous prime is 3791873. The next prime is 3791899. The reversal of 3791881 is 1881973.

3791881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1881973 = 1109 ⋅1697.

It is a cyclic number.

It is not a de Polignac number, because 3791881 - 2³ = 3791873 is a prime.

It is a super-2 number, since 2×3791881² = 28756723036322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3791881.

It is not an unprimeable number, because it can be changed into a prime (3791831) 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 in 3 ways as a sum of consecutive naturals, for example, 8775 + ... + 9196.

It is an arithmetic number, because the mean of its divisors is an integer number (952516).

Almost surely, 2^3791881 is an apocalyptic number.

It is an amenable number.

3791881 is a deficient number, since it is larger than the sum of its proper divisors (18183).

3791881 is a wasteful number, since it uses less digits than its factorization.

3791881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18182.

The product of its digits is 12096, while the sum is 37.

The square root of 3791881 is about 1947.2752758663. The cubic root of 3791881 is about 155.9378587695.

The spelling of 3791881 in words is "three million, seven hundred ninety-one thousand, eight hundred eighty-one".