189019909090998 has 48 divisors (see below), whose sum is σ = 414842096947200. Its totient is φ = 62196397745328.

The previous prime is 189019909090997. The next prime is 189019909091017. The reversal of 189019909090998 is 899090909910981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189019909090997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207298540 + ... + 208208367.

It is an arithmetic number, because the mean of its divisors is an integer number (8642543686400).

Almost surely, 2^{189019909090998} is an apocalyptic number.

189019909090998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189019909090998 is an abundant number, since it is smaller than the sum of its proper divisors (225822187856202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189019909090998 is a wasteful number, since it uses less digits than its factorization.

189019909090998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415507241 (or 415507238 counting only the distinct ones).

The product of its (nonzero) digits is 306110016, while the sum is 81.

The spelling of 189019909090998 in words is "one hundred eighty-nine trillion, nineteen billion, nine hundred nine million, ninety thousand, nine hundred ninety-eight".