8400830820185 has 4 divisors (see below), whose sum is σ = 10080996984228. Its totient is φ = 6720664656144.

The previous prime is 8400830820163. The next prime is 8400830820191. The reversal of 8400830820185 is 5810280380048.

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 4012694055241 + 4388136764944 = 2003171^2 + 2094788^2 .

It is a cyclic number.

It is not a de Polignac number, because 8400830820185 - 2²⁶ = 8400763711321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840083082014 + ... + 840083082023.

It is an arithmetic number, because the mean of its divisors is an integer number (2520249246057).

Almost surely, 2^{8400830820185} is an apocalyptic number.

It is an amenable number.

8400830820185 is a deficient number, since it is larger than the sum of its proper divisors (1680166164043).

8400830820185 is a wasteful number, since it uses less digits than its factorization.

8400830820185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680166164042.

The product of its (nonzero) digits is 491520, while the sum is 47.

The spelling of 8400830820185 in words is "eight trillion, four hundred billion, eight hundred thirty million, eight hundred twenty thousand, one hundred eighty-five".