189931609086 has 16 divisors (see below), whose sum is σ = 379889512704. Its totient is φ = 63306153944.

The previous prime is 189931609079. The next prime is 189931609103. The reversal of 189931609086 is 680906139981.

189931609086 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×189931609086² (a number of 23 digits) contains 22 as substring.

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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001076 + ... + 1175591.

It is an arithmetic number, because the mean of its divisors is an integer number (23743094544).

Almost surely, 2^189931609086 is an apocalyptic number.

189931609086 is an abundant number, since it is smaller than the sum of its proper divisors (189957903618).

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

189931609086 is a wasteful number, since it uses less digits than its factorization.

189931609086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191215.

The product of its (nonzero) digits is 5038848, while the sum is 60.

The spelling of 189931609086 in words is "one hundred eighty-nine billion, nine hundred thirty-one million, six hundred nine thousand, eighty-six".