2188870172 has 6 divisors (see below), whose sum is σ = 3830522808. Its totient is φ = 1094435084.

The previous prime is 2188870133. The next prime is 2188870199. The reversal of 2188870172 is 2710788812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273608768 + ... + 273608775.

It is an arithmetic number, because the mean of its divisors is an integer number (638420468).

Almost surely, 2^2188870172 is an apocalyptic number.

It is an amenable number.

2188870172 is a deficient number, since it is larger than the sum of its proper divisors (1641652636).

2188870172 is a wasteful number, since it uses less digits than its factorization.

2188870172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547217547 (or 547217545 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 44.

The square root of 2188870172 is about 46785.3627964987. The cubic root of 2188870172 is about 1298.3945016570.

The spelling of 2188870172 in words is "two billion, one hundred eighty-eight million, eight hundred seventy thousand, one hundred seventy-two".