189133605448 has 16 divisors (see below), whose sum is σ = 358281444780. Its totient is φ = 93591886848.

The previous prime is 189133605431. The next prime is 189133605481. The reversal of 189133605448 is 844506331981.

It can be written as a sum of positive squares in 2 ways, for example, as 187296797284 + 1836808164 = 432778^2 + 42858^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189133605395 and 189133605404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121863661 + ... + 121865212.

Almost surely, 2^189133605448 is an apocalyptic number.

It is an amenable number.

189133605448 is a deficient number, since it is larger than the sum of its proper divisors (169147839332).

189133605448 is a wasteful number, since it uses less digits than its factorization.

189133605448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243728976 (or 243728972 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 189133605448 in words is "one hundred eighty-nine billion, one hundred thirty-three million, six hundred five thousand, four hundred forty-eight".