15530230789 has 2 divisors, whose sum is σ = 15530230790. Its totient is φ = 15530230788.

The previous prime is 15530230787. The next prime is 15530230799. The reversal of 15530230789 is 98703203551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14584668289 + 945562500 = 120767^2 + 30750^2 .

It is a cyclic number.

It is not a de Polignac number, because 15530230789 - 2¹ = 15530230787 is a prime.

Together with 15530230787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15530230787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765115394 + 7765115395.

It is an arithmetic number, because the mean of its divisors is an integer number (7765115395).

Almost surely, 2^15530230789 is an apocalyptic number.

It is an amenable number.

15530230789 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530230789 is an equidigital number, since it uses as much as digits as its factorization.

15530230789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 15530230789 in words is "fifteen billion, five hundred thirty million, two hundred thirty thousand, seven hundred eighty-nine".