Search a number
-
+
19210285093 is a prime number
BaseRepresentation
bin10001111001000001…
…011011000000100101
31211120210112121001111
4101321001123000211
5303320313110333
612454115025021
71250022505036
oct217101330045
954523477044
1019210285093
11816878357a
12388159b171
131a71bb62cc
14d03476a8d
157767764cd
hex47905b025

19210285093 has 2 divisors, whose sum is σ = 19210285094. Its totient is φ = 19210285092.

The previous prime is 19210285057. The next prime is 19210285111. The reversal of 19210285093 is 39058201291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15530892129 + 3679392964 = 124623^2 + 60658^2 .

It is an emirp because it is prime and its reverse (39058201291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19210285093 - 229 = 18673414181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19210285013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9605142546 + 9605142547.

It is an arithmetic number, because the mean of its divisors is an integer number (9605142547).

Almost surely, 219210285093 is an apocalyptic number.

It is an amenable number.

19210285093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19210285093 is an equidigital number, since it uses as much as digits as its factorization.

19210285093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 19210285093 in words is "nineteen billion, two hundred ten million, two hundred eighty-five thousand, ninety-three".