1641241565 has 8 divisors (see below), whose sum is σ = 2073147360. Its totient is φ = 1243888272.

The previous prime is 1641241541. The next prime is 1641241577. The reversal of 1641241565 is 5651421461.

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 1641241565 - 2¹⁴ = 1641225181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8638019 + ... + 8638208.

It is an arithmetic number, because the mean of its divisors is an integer number (259143420).

Almost surely, 2^1641241565 is an apocalyptic number.

It is an amenable number.

1641241565 is a deficient number, since it is larger than the sum of its proper divisors (431905795).

1641241565 is a wasteful number, since it uses less digits than its factorization.

1641241565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17276251.

The product of its digits is 28800, while the sum is 35.

The square root of 1641241565 is about 40512.2396937024. The cubic root of 1641241565 is about 1179.5712233678.

The spelling of 1641241565 in words is "one billion, six hundred forty-one million, two hundred forty-one thousand, five hundred sixty-five".