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1230365165 = 5298485277
BaseRepresentation
bin100100101010101…
…1110000111101101
310011202011000201012
41021111132013231
510004433141130
6322030555005
742326634311
oct11125360755
93152130635
101230365165
11581566617
122a4068a65
13167b96733
14b9595b41
1573037995
hex4955e1ed

1230365165 has 8 divisors (see below), whose sum is σ = 1527350040. Its totient is φ = 950350912.

The previous prime is 1230365137. The next prime is 1230365183. The reversal of 1230365165 is 5615630321.

It can be written as a sum of positive squares in 4 ways, for example, as 170406916 + 1059958249 = 13054^2 + 32557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230365165 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4242494 + ... + 4242783.

It is an arithmetic number, because the mean of its divisors is an integer number (190918755).

Almost surely, 21230365165 is an apocalyptic number.

It is an amenable number.

1230365165 is a deficient number, since it is larger than the sum of its proper divisors (296984875).

1230365165 is an equidigital number, since it uses as much as digits as its factorization.

1230365165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8485311.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1230365165 is about 35076.5614762907. The cubic root of 1230365165 is about 1071.5472897826.

Adding to 1230365165 its reverse (5615630321), we get a palindrome (6845995486).

The spelling of 1230365165 in words is "one billion, two hundred thirty million, three hundred sixty-five thousand, one hundred sixty-five".

Divisors: 1 5 29 145 8485277 42426385 246073033 1230365165