2185406674 has 8 divisors (see below), whose sum is σ = 3576120048. Its totient is φ = 993366660.

The previous prime is 2185406633. The next prime is 2185406701. The reversal of 2185406674 is 4766045812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2185406674.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49668312 + ... + 49668355.

It is an arithmetic number, because the mean of its divisors is an integer number (447015006).

Almost surely, 2^2185406674 is an apocalyptic number.

2185406674 is a deficient number, since it is larger than the sum of its proper divisors (1390713374).

2185406674 is a wasteful number, since it uses less digits than its factorization.

2185406674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99336680.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 2185406674 is about 46748.3333820576. Note that the first 4 decimals coincide. The cubic root of 2185406674 is about 1297.7093139593.

The spelling of 2185406674 in words is "two billion, one hundred eighty-five million, four hundred six thousand, six hundred seventy-four".