15220235389 has 2 divisors, whose sum is σ = 15220235390. Its totient is φ = 15220235388.

The previous prime is 15220235363. The next prime is 15220235453. The reversal of 15220235389 is 98353202251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8710488900 + 6509746489 = 93330^2 + 80683^2 .

It is a cyclic number.

It is not a de Polignac number, because 15220235389 - 2¹¹ = 15220233341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15220233389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7610117694 + 7610117695.

It is an arithmetic number, because the mean of its divisors is an integer number (7610117695).

Almost surely, 2^15220235389 is an apocalyptic number.

It is an amenable number.

15220235389 is a deficient number, since it is larger than the sum of its proper divisors (1).

15220235389 is an equidigital number, since it uses as much as digits as its factorization.

15220235389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 15220235389 in words is "fifteen billion, two hundred twenty million, two hundred thirty-five thousand, three hundred eighty-nine".