4391783161 has 2 divisors, whose sum is σ = 4391783162. Its totient is φ = 4391783160.

The previous prime is 4391783131. The next prime is 4391783173. The reversal of 4391783161 is 1613871934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4388267536 + 3515625 = 66244^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 4391783161 - 2²¹ = 4389686009 is a prime.

It is not a weakly prime, because it can be changed into another prime (4391783131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2195891580 + 2195891581.

It is an arithmetic number, because the mean of its divisors is an integer number (2195891581).

Almost surely, 2^4391783161 is an apocalyptic number.

It is an amenable number.

4391783161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4391783161 is an equidigital number, since it uses as much as digits as its factorization.

4391783161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 4391783161 is about 66270.5301095442. The cubic root of 4391783161 is about 1637.6218705869.

The spelling of 4391783161 in words is "four billion, three hundred ninety-one million, seven hundred eighty-three thousand, one hundred sixty-one".