1320005633 has 2 divisors, whose sum is σ = 1320005634. Its totient is φ = 1320005632.

The previous prime is 1320005611. The next prime is 1320005683. The reversal of 1320005633 is 3365000231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 973003249 + 347002384 = 31193^2 + 18628^2 .

It is an emirp because it is prime and its reverse (3365000231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320005633 - 2¹² = 1320001537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320005599 and 1320005608.

It is not a weakly prime, because it can be changed into another prime (1320005683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660002816 + 660002817.

It is an arithmetic number, because the mean of its divisors is an integer number (660002817).

Almost surely, 2^1320005633 is an apocalyptic number.

It is an amenable number.

1320005633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320005633 is an equidigital number, since it uses as much as digits as its factorization.

1320005633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 1320005633 is about 36331.8817706983. The cubic root of 1320005633 is about 1096.9628708841.

Adding to 1320005633 its reverse (3365000231), we get a palindrome (4685005864).

The spelling of 1320005633 in words is "one billion, three hundred twenty million, five thousand, six hundred thirty-three".