9135436129 has 4 divisors (see below), whose sum is σ = 9347888176. Its totient is φ = 8922984084.

The previous prime is 9135436117. The next prime is 9135436133. The reversal of 9135436129 is 9216345319.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9216345319 = 29 ⋅317805011.

It is a cyclic number.

It is not a de Polignac number, because 9135436129 - 2¹⁷ = 9135305057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 212452003 = 9135436129 / (9 + 1 + 3 + 5 + 4 + 3 + 6 + 1 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9135436109) 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, 106225959 + ... + 106226044.

It is an arithmetic number, because the mean of its divisors is an integer number (2336972044).

Almost surely, 2^9135436129 is an apocalyptic number.

It is an amenable number.

9135436129 is a deficient number, since it is larger than the sum of its proper divisors (212452047).

9135436129 is a wasteful number, since it uses less digits than its factorization.

9135436129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212452046.

The product of its digits is 174960, while the sum is 43.

The square root of 9135436129 is about 95579.4754589080. The cubic root of 9135436129 is about 2090.4659361968.

The spelling of 9135436129 in words is "nine billion, one hundred thirty-five million, four hundred thirty-six thousand, one hundred twenty-nine".