1806108065857 has 8 divisors (see below), whose sum is σ = 1806674446080. Its totient is φ = 1805541781680.

The previous prime is 1806108065819. The next prime is 1806108065863. The reversal of 1806108065857 is 7585608016081.

It is a happy number.

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-1806108065857 is a prime.

It is a super-3 number, since 3×1806108065857³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1806108065798 and 1806108065807.

It is not an unprimeable number, because it can be changed into a prime (1806108065897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56145744 + ... + 56177902.

It is an arithmetic number, because the mean of its divisors is an integer number (225834305760).

Almost surely, 2^{1806108065857} is an apocalyptic number.

It is an amenable number.

1806108065857 is a deficient number, since it is larger than the sum of its proper divisors (566380223).

1806108065857 is a wasteful number, since it uses less digits than its factorization.

1806108065857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48023.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 1806108065857 in words is "one trillion, eight hundred six billion, one hundred eight million, sixty-five thousand, eight hundred fifty-seven".