Base | Representation |
---|---|
bin | 10110101000110… |
… | …10000011010101 |
3 | 111020022212102000 |
4 | 23110122003111 |
5 | 342103231330 |
6 | 30502105513 |
7 | 4464054204 |
oct | 1324320325 |
9 | 436285360 |
10 | 189898965 |
11 | 982139a3 |
12 | 5371b299 |
13 | 3045b769 |
14 | 1b31323b |
15 | 11a11560 |
hex | b51a0d5 |
189898965 has 32 divisors (see below), whose sum is σ = 345459840. Its totient is φ = 98921088.
The previous prime is 189898949. The next prime is 189898967. The reversal of 189898965 is 569898981.
It is not a de Polignac number, because 189898965 - 24 = 189898949 is a prime.
It is an alternating number because its digits alternate between odd and even.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (189898967) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10552 + ... + 22161.
It is an arithmetic number, because the mean of its divisors is an integer number (10795620).
Almost surely, 2189898965 is an apocalyptic number.
189898965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
189898965 is a deficient number, since it is larger than the sum of its proper divisors (155560875).
189898965 is a wasteful number, since it uses less digits than its factorization.
189898965 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32770 (or 32764 counting only the distinct ones).
The product of its digits is 11197440, while the sum is 63.
The square root of 189898965 is about 13780.3833400962. The cubic root of 189898965 is about 574.7877881044.
The spelling of 189898965 in words is "one hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred sixty-five".
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