1607641989169 has 8 divisors (see below), whose sum is σ = 1663215039720. Its totient is φ = 1552078080000.

The previous prime is 1607641989157. The next prime is 1607641989209. The reversal of 1607641989169 is 9619891467061.

It can be written as a sum of positive squares in 4 ways, for example, as 139231220769 + 1468410768400 = 373137^2 + 1211780^2 .

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 1607641989169 - 2⁵ = 1607641989137 is a prime.

It is a super-2 number, since 2×1607641989169² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1607641980169) 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, 1926582 + ... + 2631919.

It is an arithmetic number, because the mean of its divisors is an integer number (207901879965).

Almost surely, 2^{1607641989169} is an apocalyptic number.

It is an amenable number.

1607641989169 is a deficient number, since it is larger than the sum of its proper divisors (55573050551).

1607641989169 is a wasteful number, since it uses less digits than its factorization.

1607641989169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570691.

The product of its (nonzero) digits is 35271936, while the sum is 67.

The spelling of 1607641989169 in words is "one trillion, six hundred seven billion, six hundred forty-one million, nine hundred eighty-nine thousand, one hundred sixty-nine".