189695786219 has 4 divisors (see below), whose sum is σ = 189815620896. Its totient is φ = 189575951544.

The previous prime is 189695786191. The next prime is 189695786233. The reversal of 189695786219 is 912687596981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912687596981 = 7333 ⋅124463057.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189695786219 is a prime.

It is a super-2 number, since 2×189695786219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189695786249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59914964 + ... + 59918129.

It is an arithmetic number, because the mean of its divisors is an integer number (47453905224).

Almost surely, 2^189695786219 is an apocalyptic number.

189695786219 is a deficient number, since it is larger than the sum of its proper divisors (119834677).

189695786219 is a wasteful number, since it uses less digits than its factorization.

189695786219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119834676.

The product of its digits is 117573120, while the sum is 71.

The spelling of 189695786219 in words is "one hundred eighty-nine billion, six hundred ninety-five million, seven hundred eighty-six thousand, two hundred nineteen".