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198882389 is a prime number
BaseRepresentation
bin10111101101010…
…11010001010101
3111212020021100102
423312223101111
5401403214024
631422423445
74633321016
oct1366532125
9455207312
10198882389
11a229a312
1256731b85
13322856b4
141c5b100d
15126d81ae
hexbdab455

198882389 has 2 divisors, whose sum is σ = 198882390. Its totient is φ = 198882388.

The previous prime is 198882347. The next prime is 198882401. The reversal of 198882389 is 983288891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192044164 + 6838225 = 13858^2 + 2615^2 .

It is a cyclic number.

It is not a de Polignac number, because 198882389 - 220 = 197833813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198882589) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99441194 + 99441195.

It is an arithmetic number, because the mean of its divisors is an integer number (99441195).

Almost surely, 2198882389 is an apocalyptic number.

It is an amenable number.

198882389 is a deficient number, since it is larger than the sum of its proper divisors (1).

198882389 is an equidigital number, since it uses as much as digits as its factorization.

198882389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 56.

The square root of 198882389 is about 14102.5667521909. The cubic root of 198882389 is about 583.7122074921.

The spelling of 198882389 in words is "one hundred ninety-eight million, eight hundred eighty-two thousand, three hundred eighty-nine".