9789250538 has 4 divisors (see below), whose sum is σ = 14683875810. Its totient is φ = 4894625268.

The previous prime is 9789250529. The next prime is 9789250571. The reversal of 9789250538 is 8350529879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8350529879 = 2297 ⋅3635407.

It can be written as a sum of positive squares in only one way, i.e., 5994320929 + 3794929609 = 77423^2 + 61603^2 .

It is an unprimeable number.

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, 2447312633 + ... + 2447312636.

Almost surely, 2^9789250538 is an apocalyptic number.

9789250538 is a deficient number, since it is larger than the sum of its proper divisors (4894625272).

9789250538 is a wasteful number, since it uses less digits than its factorization.

9789250538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894625271.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The square root of 9789250538 is about 98940.6414877122. The cubic root of 9789250538 is about 2139.1922401980.

The spelling of 9789250538 in words is "nine billion, seven hundred eighty-nine million, two hundred fifty thousand, five hundred thirty-eight".