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198013562409589 is a prime number
BaseRepresentation
bin101101000001011110100000…
…000011000101001001110101
3221222002220121121211222222121
4231001132200003011021311
5201423223233434101324
61541050101425555541
756465002445352253
oct5501364003051165
9858086547758877
10198013562409589
1158103097860633
121a2604314a5bb1
1386647a2793254
1436c7c9c49d5d3
1517d5bc1aa85e4
hexb417a00c5275

198013562409589 has 2 divisors, whose sum is σ = 198013562409590. Its totient is φ = 198013562409588.

The previous prime is 198013562409583. The next prime is 198013562409613. The reversal of 198013562409589 is 985904265310891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131398305668100 + 66615256741489 = 11462910^2 + 8161817^2 .

It is an emirp because it is prime and its reverse (985904265310891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198013562409589 - 225 = 198013528855157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198013562409583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99006781204794 + 99006781204795.

It is an arithmetic number, because the mean of its divisors is an integer number (99006781204795).

Almost surely, 2198013562409589 is an apocalyptic number.

It is an amenable number.

198013562409589 is a deficient number, since it is larger than the sum of its proper divisors (1).

198013562409589 is an equidigital number, since it uses as much as digits as its factorization.

198013562409589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 167961600, while the sum is 70.

The spelling of 198013562409589 in words is "one hundred ninety-eight trillion, thirteen billion, five hundred sixty-two million, four hundred nine thousand, five hundred eighty-nine".