6181947 has 8 divisors (see below), whose sum is σ = 9158480. Its totient is φ = 4121280.

The previous prime is 6181943. The next prime is 6181949. The reversal of 6181947 is 7491816.

It is not a de Polignac number, because 6181947 - 2² = 6181943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6181943) 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 7 ways as a sum of consecutive naturals, for example, 114454 + ... + 114507.

It is an arithmetic number, because the mean of its divisors is an integer number (1144810).

Almost surely, 2^6181947 is an apocalyptic number.

6181947 is a deficient number, since it is larger than the sum of its proper divisors (2976533).

6181947 is a wasteful number, since it uses less digits than its factorization.

6181947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228970 (or 228964 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 6181947 is about 2486.3521472229. The cubic root of 6181947 is about 183.5305752297.

The spelling of 6181947 in words is "six million, one hundred eighty-one thousand, nine hundred forty-seven".