104185836949 has 4 divisors (see below), whose sum is σ = 104849441164. Its totient is φ = 103522232736.

The previous prime is 104185836917. The next prime is 104185836959. The reversal of 104185836949 is 949638581401.

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 56113081924 + 48072755025 = 236882^2 + 219255^2 .

It is a cyclic number.

It is not a de Polignac number, because 104185836949 - 2⁵ = 104185836917 is a prime.

It is a super-2 number, since 2×104185836949² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104185836893 and 104185836902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104185836959) 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 3 ways as a sum of consecutive naturals, for example, 331801872 + ... + 331802185.

It is an arithmetic number, because the mean of its divisors is an integer number (26212360291).

Almost surely, 2^104185836949 is an apocalyptic number.

It is an amenable number.

104185836949 is a deficient number, since it is larger than the sum of its proper divisors (663604215).

104185836949 is an equidigital number, since it uses as much as digits as its factorization.

104185836949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663604214.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 104185836949 in words is "one hundred four billion, one hundred eighty-five million, eight hundred thirty-six thousand, nine hundred forty-nine".