1438170189 has 8 divisors (see below), whose sum is σ = 1920179232. Its totient is φ = 957470640.

The previous prime is 1438170163. The next prime is 1438170191. The reversal of 1438170189 is 9810718341.

1438170189 = 163² + 164² + ... + 1628².

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

It is not a de Polignac number, because 1438170189 - 2⁵ = 1438170157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1438170189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438170109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324807 + ... + 329204.

It is an arithmetic number, because the mean of its divisors is an integer number (240022404).

Almost surely, 2^1438170189 is an apocalyptic number.

It is an amenable number.

1438170189 is a deficient number, since it is larger than the sum of its proper divisors (482009043).

1438170189 is an equidigital number, since it uses as much as digits as its factorization.

1438170189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654747.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 1438170189 is about 37923.2143811676. The cubic root of 1438170189 is about 1128.7647213404.

The spelling of 1438170189 in words is "one billion, four hundred thirty-eight million, one hundred seventy thousand, one hundred eighty-nine".