1630615541 has 2 divisors, whose sum is σ = 1630615542. Its totient is φ = 1630615540.

The previous prime is 1630615529. The next prime is 1630615559. The reversal of 1630615541 is 1455160361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1432622500 + 197993041 = 37850^2 + 14071^2 .

It is an emirp because it is prime and its reverse (1455160361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630615541 - 2⁶ = 1630615477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1630615498 and 1630615507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630615241) 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, 815307770 + 815307771.

It is an arithmetic number, because the mean of its divisors is an integer number (815307771).

Almost surely, 2^1630615541 is an apocalyptic number.

It is an amenable number.

1630615541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630615541 is an equidigital number, since it uses as much as digits as its factorization.

1630615541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1630615541 is about 40380.8808843987. The cubic root of 1630615541 is about 1177.0200449571.

The spelling of 1630615541 in words is "one billion, six hundred thirty million, six hundred fifteen thousand, five hundred forty-one".