189899484285 has 32 divisors (see below), whose sum is σ = 348498415872. Its totient is φ = 86497781760.

The previous prime is 189899484277. The next prime is 189899484301. The reversal of 189899484285 is 582484998981.

It is not a de Polignac number, because 189899484285 - 2³ = 189899484277 is a prime.

It is a super-2 number, since 2×189899484285² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3235476 + ... + 3293645.

It is an arithmetic number, because the mean of its divisors is an integer number (10890575496).

Almost surely, 2^189899484285 is an apocalyptic number.

189899484285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189899484285 is a deficient number, since it is larger than the sum of its proper divisors (158598931587).

189899484285 is a wasteful number, since it uses less digits than its factorization.

189899484285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529413.

The product of its digits is 477757440, while the sum is 75.

The spelling of 189899484285 in words is "one hundred eighty-nine billion, eight hundred ninety-nine million, four hundred eighty-four thousand, two hundred eighty-five".