9529501138 has 4 divisors (see below), whose sum is σ = 14294251710. Its totient is φ = 4764750568.

The previous prime is 9529501133. The next prime is 9529501139. The reversal of 9529501138 is 8311059259.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8311059259 = 6329 ⋅1313171.

It can be written as a sum of positive squares in only one way, i.e., 8316163249 + 1213337889 = 91193^2 + 34833^2 .

It is a super-2 number, since 2×9529501138² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9529501094 and 9529501103.

It is not an unprimeable number, because it can be changed into a prime (9529501133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2382375283 + ... + 2382375286.

Almost surely, 2^9529501138 is an apocalyptic number.

9529501138 is a deficient number, since it is larger than the sum of its proper divisors (4764750572).

9529501138 is a wasteful number, since it uses less digits than its factorization.

9529501138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764750571.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 9529501138 is about 97619.1637845766. The cubic root of 9529501138 is about 2120.1018357691.

The spelling of 9529501138 in words is "nine billion, five hundred twenty-nine million, five hundred one thousand, one hundred thirty-eight".