1641602930689 has 8 divisors (see below), whose sum is σ = 1642120389000. Its totient is φ = 1641085565952.

The previous prime is 1641602930623. The next prime is 1641602930699. The reversal of 1641602930689 is 9860392061461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 102651033664 + 1538951897025 = 320392^2 + 1240545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641602930689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641602930699) by changing a digit.

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, 50699097 + ... + 50731465.

It is an arithmetic number, because the mean of its divisors is an integer number (205265048625).

Almost surely, 2^{1641602930689} is an apocalyptic number.

It is an amenable number.

1641602930689 is a deficient number, since it is larger than the sum of its proper divisors (517458311).

1641602930689 is an equidigital number, since it uses as much as digits as its factorization.

1641602930689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46787.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 1641602930689 in words is "one trillion, six hundred forty-one billion, six hundred two million, nine hundred thirty thousand, six hundred eighty-nine".