909189229257 has 48 divisors (see below), whose sum is σ = 1372652498880. Its totient is φ = 579159504000.

The previous prime is 909189229241. The next prime is 909189229271. The reversal of 909189229257 is 752922981909.

It is not a de Polignac number, because 909189229257 - 2⁴ = 909189229241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 909189229194 and 909189229203.

It is not an unprimeable number, because it can be changed into a prime (909189229657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66712878 + ... + 66726504.

It is an arithmetic number, because the mean of its divisors is an integer number (28596927060).

Almost surely, 2^909189229257 is an apocalyptic number.

It is an amenable number.

909189229257 is a deficient number, since it is larger than the sum of its proper divisors (463463269623).

909189229257 is a wasteful number, since it uses less digits than its factorization.

909189229257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16294 (or 16291 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 63.

The spelling of 909189229257 in words is "nine hundred nine billion, one hundred eighty-nine million, two hundred twenty-nine thousand, two hundred fifty-seven".