9141478857 has 24 divisors (see below), whose sum is σ = 15754024800. Its totient is φ = 5223701448.

The previous prime is 9141478847. The next prime is 9141478921. The reversal of 9141478857 is 7588741419.

9141478857 is a `hidden beast` number, since 91 + 4 + 1 + 478 + 85 + 7 = 666.

It is not a de Polignac number, because 9141478857 - 2²⁰ = 9140430281 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9141478807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3453507 + ... + 3456152.

It is an arithmetic number, because the mean of its divisors is an integer number (656417700).

Almost surely, 2^9141478857 is an apocalyptic number.

It is an amenable number.

9141478857 is a deficient number, since it is larger than the sum of its proper divisors (6612545943).

9141478857 is a wasteful number, since it uses less digits than its factorization.

9141478857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909682 (or 6909669 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 9141478857 is about 95611.0812458472. The cubic root of 9141478857 is about 2090.9267546578.

The spelling of 9141478857 in words is "nine billion, one hundred forty-one million, four hundred seventy-eight thousand, eight hundred fifty-seven".