15338897789 has 4 divisors (see below), whose sum is σ = 15340864860. Its totient is φ = 15336930720.

The previous prime is 15338897767. The next prime is 15338897803. The reversal of 15338897789 is 98779883351.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7861836889 + 7477060900 = 88667^2 + 86470^2 .

It is a cyclic number.

It is not a de Polignac number, because 15338897789 - 2¹² = 15338893693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15338897689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971792 + ... + 987449.

It is an arithmetic number, because the mean of its divisors is an integer number (3835216215).

Almost surely, 2^15338897789 is an apocalyptic number.

It is an amenable number.

15338897789 is a deficient number, since it is larger than the sum of its proper divisors (1967071).

15338897789 is an equidigital number, since it uses as much as digits as its factorization.

15338897789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967070.

The product of its digits is 91445760, while the sum is 68.

The spelling of 15338897789 in words is "fifteen billion, three hundred thirty-eight million, eight hundred ninety-seven thousand, seven hundred eighty-nine".