1628605441 has 2 divisors, whose sum is σ = 1628605442. Its totient is φ = 1628605440.

The previous prime is 1628605397. The next prime is 1628605471. The reversal of 1628605441 is 1445068261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1625783041 + 2822400 = 40321^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1628605441 - 2¹³ = 1628597249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1628605441.

It is not a weakly prime, because it can be changed into another prime (1628605471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814302720 + 814302721.

It is an arithmetic number, because the mean of its divisors is an integer number (814302721).

Almost surely, 2^1628605441 is an apocalyptic number.

It is an amenable number.

1628605441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628605441 is an equidigital number, since it uses as much as digits as its factorization.

1628605441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1628605441 is about 40355.9839552947. The cubic root of 1628605441 is about 1176.5361988719.

The spelling of 1628605441 in words is "one billion, six hundred twenty-eight million, six hundred five thousand, four hundred forty-one".