1606623433 has 2 divisors, whose sum is σ = 1606623434. Its totient is φ = 1606623432.

The previous prime is 1606623409. The next prime is 1606623443. The reversal of 1606623433 is 3343266061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1596561849 + 10061584 = 39957^2 + 3172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606623433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1606623443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803311716 + 803311717.

It is an arithmetic number, because the mean of its divisors is an integer number (803311717).

Almost surely, 2^1606623433 is an apocalyptic number.

It is an amenable number.

1606623433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606623433 is an equidigital number, since it uses as much as digits as its factorization.

1606623433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 1606623433 is about 40082.7074060623. The cubic root of 1606623433 is about 1171.2187930060.

Adding to 1606623433 its reverse (3343266061), we get a palindrome (4949889494).

The spelling of 1606623433 in words is "one billion, six hundred six million, six hundred twenty-three thousand, four hundred thirty-three".