8470813857 has 8 divisors (see below), whose sum is σ = 12321183840. Its totient is φ = 5133826560.

The previous prime is 8470813849. The next prime is 8470813867. The reversal of 8470813857 is 7583180748.

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

It is not a de Polignac number, because 8470813857 - 2³ = 8470813849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8470813817) 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, 128345632 + ... + 128345697.

It is an arithmetic number, because the mean of its divisors is an integer number (1540147980).

Almost surely, 2^8470813857 is an apocalyptic number.

It is an amenable number.

8470813857 is a deficient number, since it is larger than the sum of its proper divisors (3850369983).

8470813857 is a wasteful number, since it uses less digits than its factorization.

8470813857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256691343.

The product of its (nonzero) digits is 1505280, while the sum is 51.

The square root of 8470813857 is about 92037.0243814955. The cubic root of 8470813857 is about 2038.4890337349.

The spelling of 8470813857 in words is "eight billion, four hundred seventy million, eight hundred thirteen thousand, eight hundred fifty-seven".