2189420173158 has 8 divisors (see below), whose sum is σ = 4378840346328. Its totient is φ = 729806724384.

The previous prime is 2189420173123. The next prime is 2189420173181. The reversal of 2189420173158 is 8513710249812.

It is a happy number.

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

2189420173158 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2189420173158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182451681091 + ... + 182451681102.

It is an arithmetic number, because the mean of its divisors is an integer number (547355043291).

Almost surely, 2^{2189420173158} is an apocalyptic number.

2189420173158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2189420173158 is a wasteful number, since it uses less digits than its factorization.

2189420173158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364903362198.

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 2189420173158 in words is "two trillion, one hundred eighty-nine billion, four hundred twenty million, one hundred seventy-three thousand, one hundred fifty-eight".