6381946 has 4 divisors (see below), whose sum is σ = 9572922. Its totient is φ = 3190972.

The previous prime is 6381941. The next prime is 6381961. The reversal of 6381946 is 6491836.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 741321 = 2375^2 + 861^2 .

It is not an unprimeable number, because it can be changed into a prime (6381941) 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 as a sum of consecutive naturals, namely, 1595485 + ... + 1595488.

Almost surely, 2^6381946 is an apocalyptic number.

6381946 is a deficient number, since it is larger than the sum of its proper divisors (3190976).

6381946 is a wasteful number, since it uses less digits than its factorization.

6381946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190975.

The product of its digits is 31104, while the sum is 37.

The square root of 6381946 is about 2526.2513730823. The cubic root of 6381946 is about 185.4888071653.

The spelling of 6381946 in words is "six million, three hundred eighty-one thousand, nine hundred forty-six".