1808958080659 has 4 divisors (see below), whose sum is σ = 1887608432016. Its totient is φ = 1730307729304.

The previous prime is 1808958080653. The next prime is 1808958080701. The reversal of 1808958080659 is 9560808598081.

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

It is a cyclic number.

It is not a de Polignac number, because 1808958080659 - 2³ = 1808958080651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1808958080594 and 1808958080603.

It is not an unprimeable number, because it can be changed into a prime (1808958080651) 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, 39325175644 + ... + 39325175689.

It is an arithmetic number, because the mean of its divisors is an integer number (471902108004).

Almost surely, 2^{1808958080659} is an apocalyptic number.

1808958080659 is a deficient number, since it is larger than the sum of its proper divisors (78650351357).

1808958080659 is an equidigital number, since it uses as much as digits as its factorization.

1808958080659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78650351356.

The product of its (nonzero) digits is 49766400, while the sum is 67.

The spelling of 1808958080659 in words is "one trillion, eight hundred eight billion, nine hundred fifty-eight million, eighty thousand, six hundred fifty-nine".