189131679993 has 16 divisors (see below), whose sum is σ = 265519493120. Its totient is φ = 119419402896.

The previous prime is 189131679977. The next prime is 189131680013. The reversal of 189131679993 is 399976131981.

It is not a de Polignac number, because 189131679993 - 2⁴ = 189131679977 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189131679593) 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, 232705 + ... + 657582.

It is an arithmetic number, because the mean of its divisors is an integer number (16594968320).

Almost surely, 2^189131679993 is an apocalyptic number.

It is an amenable number.

189131679993 is a deficient number, since it is larger than the sum of its proper divisors (76387813127).

189131679993 is a wasteful number, since it uses less digits than its factorization.

189131679993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894036.

The product of its digits is 19840464, while the sum is 66.

The spelling of 189131679993 in words is "one hundred eighty-nine billion, one hundred thirty-one million, six hundred seventy-nine thousand, nine hundred ninety-three".