Search a number
-
+
4897691809 is a prime number
BaseRepresentation
bin1001000111110110…
…01101100010100001
3110122022212112002221
410203323031202201
540012302114214
62125554311041
7232240456603
oct44373154241
913568775087
104897691809
11209368a38a
12b48288481
136008ba5ba
1434666d173
151d9e97e24
hex123ecd8a1

4897691809 has 2 divisors, whose sum is σ = 4897691810. Its totient is φ = 4897691808.

The previous prime is 4897691803. The next prime is 4897691819. The reversal of 4897691809 is 9081967984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2513518225 + 2384173584 = 50135^2 + 48828^2 .

It is a cyclic number.

It is not a de Polignac number, because 4897691809 - 221 = 4895594657 is a prime.

It is not a weakly prime, because it can be changed into another prime (4897691803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2448845904 + 2448845905.

It is an arithmetic number, because the mean of its divisors is an integer number (2448845905).

Almost surely, 24897691809 is an apocalyptic number.

It is an amenable number.

4897691809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4897691809 is an equidigital number, since it uses as much as digits as its factorization.

4897691809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The square root of 4897691809 is about 69983.5109793728. The cubic root of 4897691809 is about 1698.2325123480.

The spelling of 4897691809 in words is "four billion, eight hundred ninety-seven million, six hundred ninety-one thousand, eight hundred nine".