189489129975 has 60 divisors (see below), whose sum is σ = 366260303376. Its totient is φ = 96666894720.

The previous prime is 189489129847. The next prime is 189489130007. The reversal of 189489129975 is 579921984981.

189489129975 is a `hidden beast` number, since 18 + 9 + 489 + 129 + 9 + 7 + 5 = 666.

It is not a de Polignac number, because 189489129975 - 2⁷ = 189489129847 is a prime.

It is a super-2 number, since 2×189489129975² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1987662 + ... + 2080811.

Almost surely, 2^189489129975 is an apocalyptic number.

189489129975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189489129975 is a deficient number, since it is larger than the sum of its proper divisors (176771173401).

189489129975 is a wasteful number, since it uses less digits than its factorization.

189489129975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068518 (or 4068504 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 72.

The spelling of 189489129975 in words is "one hundred eighty-nine billion, four hundred eighty-nine million, one hundred twenty-nine thousand, nine hundred seventy-five".