189426813576 has 192 divisors, whose sum is σ = 640656105600. Its totient is φ = 45416954880.

The previous prime is 189426813557. The next prime is 189426813601. The reversal of 189426813576 is 675318624981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94141 + ... + 622668.

It is an arithmetic number, because the mean of its divisors is an integer number (3336750550).

Almost surely, 2^189426813576 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 189426813576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320328052800).

189426813576 is an abundant number, since it is smaller than the sum of its proper divisors (451229292024).

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

189426813576 is a wasteful number, since it uses less digits than its factorization.

189426813576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716860 (or 716845 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 189426813576 in words is "one hundred eighty-nine billion, four hundred twenty-six million, eight hundred thirteen thousand, five hundred seventy-six".