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9230749189 = 9791942779
BaseRepresentation
bin10001001100011001…
…00000111000000101
3212211022021122101121
420212030200320011
5122401032433224
64123542553541
7444514034134
oct104614407005
925738248347
109230749189
113a07576542
1219574388b1
13b4151258c
14637d1d91b
153905abbe4
hex226320e05

9230749189 has 4 divisors (see below), whose sum is σ = 9231701760. Its totient is φ = 9229796620.

The previous prime is 9230749181. The next prime is 9230749201. The reversal of 9230749189 is 9819470329.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9230749189 - 23 = 9230749181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9230749181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461599 + ... + 481180.

It is an arithmetic number, because the mean of its divisors is an integer number (2307925440).

Almost surely, 29230749189 is an apocalyptic number.

It is an amenable number.

9230749189 is a deficient number, since it is larger than the sum of its proper divisors (952571).

9230749189 is an equidigital number, since it uses as much as digits as its factorization.

9230749189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952570.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 9230749189 is about 96076.7879823217. The cubic root of 9230749189 is about 2097.7109743970.

The spelling of 9230749189 in words is "nine billion, two hundred thirty million, seven hundred forty-nine thousand, one hundred eighty-nine".

Divisors: 1 9791 942779 9230749189