9135630421 has 4 divisors (see below), whose sum is σ = 9264301344. Its totient is φ = 9006959500.

The previous prime is 9135630397. The next prime is 9135630433. The reversal of 9135630421 is 1240365319.

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.

It is a cyclic number.

It is not a de Polignac number, because 9135630421 - 2²³ = 9127241813 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 (9135630481) 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, 64335355 + ... + 64335496.

It is an arithmetic number, because the mean of its divisors is an integer number (2316075336).

Almost surely, 2^9135630421 is an apocalyptic number.

It is an amenable number.

9135630421 is a deficient number, since it is larger than the sum of its proper divisors (128670923).

9135630421 is a wasteful number, since it uses less digits than its factorization.

9135630421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128670922.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 9135630421 is about 95580.4918432627. The cubic root of 9135630421 is about 2090.4807560668.

The spelling of 9135630421 in words is "nine billion, one hundred thirty-five million, six hundred thirty thousand, four hundred twenty-one".