Search a number
-
+
8005196149 is a prime number
BaseRepresentation
bin1110111010010010…
…11001100101110101
3202122220012002200021
413131021121211311
5112343312234044
63402203045141
7402243021166
oct73511314565
922586162607
108005196149
1134387a7395
121674b107b1
139a7642272
1455d25b76d
1531cbc4e84
hex1dd259975

8005196149 has 2 divisors, whose sum is σ = 8005196150. Its totient is φ = 8005196148.

The previous prime is 8005196141. The next prime is 8005196189. The reversal of 8005196149 is 9416915008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5695720900 + 2309475249 = 75470^2 + 48057^2 .

It is a cyclic number.

It is not a de Polignac number, because 8005196149 - 23 = 8005196141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8005196141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4002598074 + 4002598075.

It is an arithmetic number, because the mean of its divisors is an integer number (4002598075).

Almost surely, 28005196149 is an apocalyptic number.

It is an amenable number.

8005196149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8005196149 is an equidigital number, since it uses as much as digits as its factorization.

8005196149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 8005196149 is about 89471.7617407861. The cubic root of 8005196149 is about 2000.4329187006.

The spelling of 8005196149 in words is "eight billion, five million, one hundred ninety-six thousand, one hundred forty-nine".