7981841 has 8 divisors (see below), whose sum is σ = 9139200. Its totient is φ = 6828768.

The previous prime is 7981837. The next prime is 7981847. The reversal of 7981841 is 1481897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7981841 - 2² = 7981837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7981795 and 7981804.

It is not an unprimeable number, because it can be changed into a prime (7981847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6800 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (1142400).

Almost surely, 2^7981841 is an apocalyptic number.

It is an amenable number.

7981841 is a deficient number, since it is larger than the sum of its proper divisors (1157359).

7981841 is a wasteful number, since it uses less digits than its factorization.

7981841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its digits is 16128, while the sum is 38.

The square root of 7981841 is about 2825.2152130413. The cubic root of 7981841 is about 199.8485603591.

The spelling of 7981841 in words is "seven million, nine hundred eighty-one thousand, eight hundred forty-one".