189466693608 has 128 divisors (see below), whose sum is σ = 504366912000. Its totient is φ = 59105034240.

The previous prime is 189466693589. The next prime is 189466693621. The reversal of 189466693608 is 806396664981.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110090188 + ... + 110091908.

It is an arithmetic number, because the mean of its divisors is an integer number (3940366500).

Almost surely, 2^189466693608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189466693608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252183456000).

189466693608 is an abundant number, since it is smaller than the sum of its proper divisors (314900218392).

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

189466693608 is a wasteful number, since it uses less digits than its factorization.

189466693608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115 (or 3111 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 66.

The spelling of 189466693608 in words is "one hundred eighty-nine billion, four hundred sixty-six million, six hundred ninety-three thousand, six hundred eight".