189808331338 has 16 divisors (see below), whose sum is σ = 294342808320. Its totient is φ = 91703354400.

The previous prime is 189808331311. The next prime is 189808331347. The reversal of 189808331338 is 833133808981.

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 7 ways as a sum of consecutive naturals, for example, 2281923 + ... + 2363638.

It is an arithmetic number, because the mean of its divisors is an integer number (18396425520).

Almost surely, 2^189808331338 is an apocalyptic number.

189808331338 is a deficient number, since it is larger than the sum of its proper divisors (104534476982).

189808331338 is a wasteful number, since it uses less digits than its factorization.

189808331338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646253.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 189808331338 in words is "one hundred eighty-nine billion, eight hundred eight million, three hundred thirty-one thousand, three hundred thirty-eight".