1630745533 has 2 divisors, whose sum is σ = 1630745534. Its totient is φ = 1630745532.

The previous prime is 1630745531. The next prime is 1630745551. The reversal of 1630745533 is 3355470361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1585074969 + 45670564 = 39813^2 + 6758^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630745533 - 2¹ = 1630745531 is a prime.

Together with 1630745531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1630745492 and 1630745501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630745531) 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, 815372766 + 815372767.

It is an arithmetic number, because the mean of its divisors is an integer number (815372767).

Almost surely, 2^1630745533 is an apocalyptic number.

It is an amenable number.

1630745533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630745533 is an equidigital number, since it uses as much as digits as its factorization.

1630745533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 37.

The square root of 1630745533 is about 40382.4904259259. The cubic root of 1630745533 is about 1177.0513213106.

The spelling of 1630745533 in words is "one billion, six hundred thirty million, seven hundred forty-five thousand, five hundred thirty-three".