9135868957 has 4 divisors (see below), whose sum is σ = 9238519260. Its totient is φ = 9033218656.

The previous prime is 9135868921. The next prime is 9135868991. The reversal of 9135868957 is 7598685319.

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 1994604921 + 7141264036 = 44661^2 + 84506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9135868957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9135868895 and 9135868904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9135868997) 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, 51325018 + ... + 51325195.

It is an arithmetic number, because the mean of its divisors is an integer number (2309629815).

Almost surely, 2^9135868957 is an apocalyptic number.

It is an amenable number.

9135868957 is a deficient number, since it is larger than the sum of its proper divisors (102650303).

9135868957 is a wasteful number, since it uses less digits than its factorization.

9135868957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102650302.

The product of its digits is 16329600, while the sum is 61.

The square root of 9135868957 is about 95581.7396629712. The cubic root of 9135868957 is about 2090.4989504170.

The spelling of 9135868957 in words is "nine billion, one hundred thirty-five million, eight hundred sixty-eight thousand, nine hundred fifty-seven".