1608059228989 has 4 divisors (see below), whose sum is σ = 1663509547260. Its totient is φ = 1552608910720.

The previous prime is 1608059228969. The next prime is 1608059228999. The reversal of 1608059228989 is 9898229508061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 452558925625 + 1155500303364 = 672725^2 + 1074942^2 .

It is a cyclic number.

It is not a de Polignac number, because 1608059228989 - 2⁷ = 1608059228861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608059228929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27725159092 + ... + 27725159149.

It is an arithmetic number, because the mean of its divisors is an integer number (415877386815).

Almost surely, 2^{1608059228989} is an apocalyptic number.

It is an amenable number.

1608059228989 is a deficient number, since it is larger than the sum of its proper divisors (55450318271).

1608059228989 is an equidigital number, since it uses as much as digits as its factorization.

1608059228989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55450318270.

The product of its (nonzero) digits is 44789760, while the sum is 67.

The spelling of 1608059228989 in words is "one trillion, six hundred eight billion, fifty-nine million, two hundred twenty-eight thousand, nine hundred eighty-nine".