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19326389 is a prime number
BaseRepresentation
bin100100110111…
…0010110110101
31100100212211012
41021232112311
514421421024
61530122005
7323162105
oct111562665
940325735
1019326389
11aa00225
126580305
134008944
1427d1205
151a6b50e
hex126e5b5

19326389 has 2 divisors, whose sum is σ = 19326390. Its totient is φ = 19326388.

The previous prime is 19326379. The next prime is 19326407. The reversal of 19326389 is 98362391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19272100 + 54289 = 4390^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 19326389 - 216 = 19260853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19326379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9663194 + 9663195.

It is an arithmetic number, because the mean of its divisors is an integer number (9663195).

Almost surely, 219326389 is an apocalyptic number.

It is an amenable number.

19326389 is a deficient number, since it is larger than the sum of its proper divisors (1).

19326389 is an equidigital number, since it uses as much as digits as its factorization.

19326389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 19326389 is about 4396.1789090072. The cubic root of 19326389 is about 268.3594576968.

The spelling of 19326389 in words is "nineteen million, three hundred twenty-six thousand, three hundred eighty-nine".