189679434969 has 8 divisors (see below), whose sum is σ = 252956788992. Its totient is φ = 126427518800.

The previous prime is 189679434953. The next prime is 189679435009. The reversal of 189679434969 is 969434976981.

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

It is a cyclic number.

It is not a de Polignac number, because 189679434969 - 2⁴ = 189679434953 is a prime.

It is a super-2 number, since 2×189679434969² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189679434969.

It is not an unprimeable number, because it can be changed into a prime (189679434929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6342057 + ... + 6371894.

It is an arithmetic number, because the mean of its divisors is an integer number (31619598624).

Almost surely, 2^189679434969 is an apocalyptic number.

It is an amenable number.

189679434969 is a deficient number, since it is larger than the sum of its proper divisors (63277354023).

189679434969 is a wasteful number, since it uses less digits than its factorization.

189679434969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12718927.

The product of its digits is 634894848, while the sum is 75.

The spelling of 189679434969 in words is "one hundred eighty-nine billion, six hundred seventy-nine million, four hundred thirty-four thousand, nine hundred sixty-nine".