9121752130 has 8 divisors (see below), whose sum is σ = 16419153852. Its totient is φ = 3648700848.

The previous prime is 9121752127. The next prime is 9121752149. The reversal of 9121752130 is 312571219.

It can be written as a sum of positive squares in 2 ways, for example, as 8692392289 + 429359841 = 93233^2 + 20721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 9121752092 and 9121752101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456087597 + ... + 456087616.

Almost surely, 2^9121752130 is an apocalyptic number.

9121752130 is a deficient number, since it is larger than the sum of its proper divisors (7297401722).

9121752130 is a wasteful number, since it uses less digits than its factorization.

9121752130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912175220.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 9121752130 is about 95507.8642311721. The cubic root of 9121752130 is about 2089.4216427353.

The spelling of 9121752130 in words is "nine billion, one hundred twenty-one million, seven hundred fifty-two thousand, one hundred thirty".