6181481 has 4 divisors (see below), whose sum is σ = 6190464. Its totient is φ = 6172500.

The previous prime is 6181477. The next prime is 6181531. The reversal of 6181481 is 1841816.

6181481 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 6181481 - 2² = 6181477 is a prime.

It is a super-2 number, since 2×6181481² = 76421414706722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6181451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3365 + ... + 4866.

It is an arithmetic number, because the mean of its divisors is an integer number (1547616).

Almost surely, 2^6181481 is an apocalyptic number.

It is an amenable number.

6181481 is a deficient number, since it is larger than the sum of its proper divisors (8983).

6181481 is an equidigital number, since it uses as much as digits as its factorization.

6181481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8982.

The product of its digits is 1536, while the sum is 29.

The square root of 6181481 is about 2486.2584338721. The cubic root of 6181481 is about 183.5259635544.

The spelling of 6181481 in words is "six million, one hundred eighty-one thousand, four hundred eighty-one".