2173918336 has 16 divisors (see below), whose sum is σ = 4330853190. Its totient is φ = 1086959104.

The previous prime is 2173918289. The next prime is 2173918343. The reversal of 2173918336 is 6338193712.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1253160000 + 920758336 = 35400^2 + 30344^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 2173918292 and 2173918301.

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 as a sum of consecutive naturals, namely, 8491741 + ... + 8491996.

Almost surely, 2^2173918336 is an apocalyptic number.

It is an amenable number.

2173918336 is a deficient number, since it is larger than the sum of its proper divisors (2156934854).

2173918336 is an equidigital number, since it uses as much as digits as its factorization.

2173918336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16983751 (or 16983739 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 2173918336 is about 46625.2971679538. The cubic root of 2173918336 is about 1295.4313666582.

The spelling of 2173918336 in words is "two billion, one hundred seventy-three million, nine hundred eighteen thousand, three hundred thirty-six".