2187989694219 has 16 divisors (see below), whose sum is σ = 3339280926720. Its totient is φ = 1248329303040.

The previous prime is 2187989694203. The next prime is 2187989694263. The reversal of 2187989694219 is 9124969897812.

It is a happy number.

It is not a de Polignac number, because 2187989694219 - 2⁴ = 2187989694203 is a prime.

It is a super-2 number, since 2×2187989694219² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2187989694299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81257979 + ... + 81284900.

It is an arithmetic number, because the mean of its divisors is an integer number (208705057920).

Almost surely, 2^{2187989694219} is an apocalyptic number.

2187989694219 is a deficient number, since it is larger than the sum of its proper divisors (1151291232501).

2187989694219 is a wasteful number, since it uses less digits than its factorization.

2187989694219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162543530.

The product of its digits is 282175488, while the sum is 75.

The spelling of 2187989694219 in words is "two trillion, one hundred eighty-seven billion, nine hundred eighty-nine million, six hundred ninety-four thousand, two hundred nineteen".