8457120218 has 8 divisors (see below), whose sum is σ = 12925032948. Its totient is φ = 4148775904.

The previous prime is 8457120151. The next prime is 8457120223. The reversal of 8457120218 is 8120217548.

It can be written as a sum of positive squares in 2 ways, for example, as 8441383129 + 15737089 = 91877^2 + 3967^2 .

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

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, 39891971 + ... + 39892182.

Almost surely, 2^8457120218 is an apocalyptic number.

8457120218 is a deficient number, since it is larger than the sum of its proper divisors (4467912730).

8457120218 is a wasteful number, since it uses less digits than its factorization.

8457120218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79784208.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 8457120218 is about 91962.6022794049. The cubic root of 8457120218 is about 2037.3899898600.

The spelling of 8457120218 in words is "eight billion, four hundred fifty-seven million, one hundred twenty thousand, two hundred eighteen".