9450128785 has 8 divisors (see below), whose sum is σ = 11340680616. Its totient is φ = 7559752320.

The previous prime is 9450128777. The next prime is 9450128789. The reversal of 9450128785 is 5878210549.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13366336 + 9436762449 = 3656^2 + 97143^2 .

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

It is not a de Polignac number, because 9450128785 - 2³ = 9450128777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9450128789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166245 + ... + 215725.

It is an arithmetic number, because the mean of its divisors is an integer number (1417585077).

Almost surely, 2^9450128785 is an apocalyptic number.

It is an amenable number.

9450128785 is a deficient number, since it is larger than the sum of its proper divisors (1890551831).

9450128785 is a wasteful number, since it uses less digits than its factorization.

9450128785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87683.

The product of its (nonzero) digits is 806400, while the sum is 49.

The square root of 9450128785 is about 97211.7728724253. The cubic root of 9450128785 is about 2114.1992236644.

The spelling of 9450128785 in words is "nine billion, four hundred fifty million, one hundred twenty-eight thousand, seven hundred eighty-five".