189843899145408 has 112 divisors (see below), whose sum is σ = 590935666548960. Its totient is φ = 59558870310912.

The previous prime is 189843899145361. The next prime is 189843899145419. The reversal of 189843899145408 is 804541998348981.

189843899145408 is a `hidden beast` number, since 1 + 8 + 9 + 8 + 4 + 3 + 89 + 91 + 45 + 408 = 666.

189843899145408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3231246141 + ... + 3231304892.

Almost surely, 2^{189843899145408} is an apocalyptic number.

189843899145408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189843899145408 is an abundant number, since it is smaller than the sum of its proper divisors (401091767403552).

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

189843899145408 is a wasteful number, since it uses less digits than its factorization.

189843899145408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462551071 (or 6462551055 counting only the distinct ones).

The product of its (nonzero) digits is 2866544640, while the sum is 81.

The spelling of 189843899145408 in words is "one hundred eighty-nine trillion, eight hundred forty-three billion, eight hundred ninety-nine million, one hundred forty-five thousand, four hundred eight".