189494545453200 has 360 divisors, whose sum is σ = 732603342754920. Its totient is φ = 45036369100800.

The previous prime is 189494545453153. The next prime is 189494545453217. The reversal of 189494545453200 is 2354545494981.

It is a happy number.

189494545453200 is a `hidden beast` number, since 1 + 8 + 9 + 4 + 9 + 4 + 54 + 545 + 32 + 0 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 41207617907856 + 148286927545344 = 6419316^2 + 12177312^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 68453641 + ... + 71168040.

Almost surely, 2^{189494545453200} is an apocalyptic number.

189494545453200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189494545453200 is an abundant number, since it is smaller than the sum of its proper divisors (543108797301720).

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

189494545453200 is a wasteful number, since it uses less digits than its factorization.

189494545453200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139621747 (or 139621733 counting only the distinct ones).

The product of its (nonzero) digits is 124416000, while the sum is 63.

The spelling of 189494545453200 in words is "one hundred eighty-nine trillion, four hundred ninety-four billion, five hundred forty-five million, four hundred fifty-three thousand, two hundred".