189666625718 has 8 divisors (see below), whose sum is σ = 284663355600. Its totient is φ = 94778840520.

The previous prime is 189666625711. The next prime is 189666625741. The reversal of 189666625718 is 817526666981.

189666625718 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×189666625718² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189666625711) 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, 27231818 + ... + 27238781.

It is an arithmetic number, because the mean of its divisors is an integer number (35582919450).

Almost surely, 2^189666625718 is an apocalyptic number.

189666625718 is a deficient number, since it is larger than the sum of its proper divisors (94996729882).

189666625718 is a wasteful number, since it uses less digits than its factorization.

189666625718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54472342.

The product of its digits is 52254720, while the sum is 65.

The spelling of 189666625718 in words is "one hundred eighty-nine billion, six hundred sixty-six million, six hundred twenty-five thousand, seven hundred eighteen".