189494496490000 has 225 divisors, whose sum is σ = 496837914024243. Its totient is φ = 69960591168000.

The previous prime is 189494496489971. The next prime is 189494496490007. The reversal of 189494496490000 is 94694494981.

The square root of 189494496490000 is 13765700.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 41065693695504 + 148428802794496 = 6408252^2 + 12183136^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189494496489899 and 189494496489908.

It is not an unprimeable number, because it can be changed into a prime (189494496490007) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 17895404706 + ... + 17895415294.

Almost surely, 2^{189494496490000} is an apocalyptic number.

189494496490000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189494496490000 is the 13765700-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189494496490000

189494496490000 is an abundant number, since it is smaller than the sum of its proper divisors (307343417534243).

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

189494496490000 is an frugal number, since it uses more digits than its factorization.

189494496490000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21232 (or 10609 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 67.

The spelling of 189494496490000 in words is "one hundred eighty-nine trillion, four hundred ninety-four billion, four hundred ninety-six million, four hundred ninety thousand".