7841881 has 4 divisors (see below), whose sum is σ = 7958992. Its totient is φ = 7724772.

The previous prime is 7841863. The next prime is 7841893. The reversal of 7841881 is 1881487.

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.

It is a cyclic number.

It is not a de Polignac number, because 7841881 - 2⁵ = 7841849 is a prime.

It is a super-2 number, since 2×7841881² = 122990195236322, 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 7841881.

It is not an unprimeable number, because it can be changed into a prime (7841381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58455 + ... + 58588.

It is an arithmetic number, because the mean of its divisors is an integer number (1989748).

Almost surely, 2^7841881 is an apocalyptic number.

It is an amenable number.

7841881 is a deficient number, since it is larger than the sum of its proper divisors (117111).

7841881 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 7841881 = (1817488)₁₃.

7841881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117110.

The product of its digits is 14336, while the sum is 37.

The square root of 7841881 is about 2800.3358727124. The cubic root of 7841881 is about 198.6735639518.

The spelling of 7841881 in words is "seven million, eight hundred forty-one thousand, eight hundred eighty-one".