1646225441 has 8 divisors (see below), whose sum is σ = 1885894080. Its totient is φ = 1407680208.

The previous prime is 1646225411. The next prime is 1646225453. The reversal of 1646225441 is 1445226461.

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 1646225441 - 2⁶ = 1646225377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1646225411) 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, 277706 + ... + 283571.

It is an arithmetic number, because the mean of its divisors is an integer number (235736760).

Almost surely, 2^1646225441 is an apocalyptic number.

It is an amenable number.

1646225441 is a deficient number, since it is larger than the sum of its proper divisors (239668639).

1646225441 is an equidigital number, since it uses as much as digits as its factorization.

1646225441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561703.

The product of its digits is 46080, while the sum is 35.

The square root of 1646225441 is about 40573.7038117054. The cubic root of 1646225441 is about 1180.7639984388.

The spelling of 1646225441 in words is "one billion, six hundred forty-six million, two hundred twenty-five thousand, four hundred forty-one".