619830641 has 2 divisors, whose sum is σ = 619830642. Its totient is φ = 619830640.

The previous prime is 619830587. The next prime is 619830649. The reversal of 619830641 is 146038916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610090000 + 9740641 = 24700^2 + 3121^2 .

It is a cyclic number.

It is not a de Polignac number, because 619830641 - 2²⁶ = 552721777 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 619830595 and 619830604.

It is not a weakly prime, because it can be changed into another prime (619830649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309915320 + 309915321.

It is an arithmetic number, because the mean of its divisors is an integer number (309915321).

Almost surely, 2^619830641 is an apocalyptic number.

It is an amenable number.

619830641 is a deficient number, since it is larger than the sum of its proper divisors (1).

619830641 is an equidigital number, since it uses as much as digits as its factorization.

619830641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 619830641 is about 24896.3981531466. The cubic root of 619830641 is about 852.6242499991.

The spelling of 619830641 in words is "six hundred nineteen million, eight hundred thirty thousand, six hundred forty-one".