189109744106858 has 8 divisors (see below), whose sum is σ = 283666163552928. Its totient is φ = 94554356255884.

The previous prime is 189109744106839. The next prime is 189109744106869. The reversal of 189109744106858 is 858601447901981.

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

It is a super-2 number, since 2×189109744106858² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189109744106791 and 189109744106800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257440316 + ... + 258173847.

It is an arithmetic number, because the mean of its divisors is an integer number (35458270444116).

Almost surely, 2^{189109744106858} is an apocalyptic number.

189109744106858 is a deficient number, since it is larger than the sum of its proper divisors (94556419446070).

189109744106858 is a wasteful number, since it uses less digits than its factorization.

189109744106858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515797548.

The product of its (nonzero) digits is 139345920, while the sum is 71.

The spelling of 189109744106858 in words is "one hundred eighty-nine trillion, one hundred nine billion, seven hundred forty-four million, one hundred six thousand, eight hundred fifty-eight".