189913899926 has 8 divisors (see below), whose sum is σ = 301627958760. Its totient is φ = 89371247008.

The previous prime is 189913899793. The next prime is 189913900051. The reversal of 189913899926 is 629998319981.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2792851436 + ... + 2792851503.

It is an arithmetic number, because the mean of its divisors is an integer number (37703494845).

Almost surely, 2^189913899926 is an apocalyptic number.

189913899926 is a deficient number, since it is larger than the sum of its proper divisors (111714058834).

189913899926 is a wasteful number, since it uses less digits than its factorization.

189913899926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5585702958.

The product of its digits is 136048896, while the sum is 74.

The spelling of 189913899926 in words is "one hundred eighty-nine billion, nine hundred thirteen million, eight hundred ninety-nine thousand, nine hundred twenty-six".