2172854618 has 8 divisors (see below), whose sum is σ = 3555580320. Its totient is φ = 987661180.

The previous prime is 2172854591. The next prime is 2172854641. The reversal of 2172854618 is 8164582712.

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

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, 49383038 + ... + 49383081.

It is an arithmetic number, because the mean of its divisors is an integer number (444447540).

Almost surely, 2^2172854618 is an apocalyptic number.

2172854618 is a deficient number, since it is larger than the sum of its proper divisors (1382725702).

2172854618 is a wasteful number, since it uses less digits than its factorization.

2172854618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98766132.

The product of its digits is 215040, while the sum is 44.

The square root of 2172854618 is about 46613.8886813791. Note that the first 3 decimals coincide. The cubic root of 2172854618 is about 1295.2200434065.

The spelling of 2172854618 in words is "two billion, one hundred seventy-two million, eight hundred fifty-four thousand, six hundred eighteen".