385542218 has 8 divisors (see below), whose sum is σ = 612331812. Its totient is φ = 181431616.

The previous prime is 385542217. The next prime is 385542239. The reversal of 385542218 is 812245583.

It can be written as a sum of positive squares in 2 ways, for example, as 358988809 + 26553409 = 18947^2 + 5153^2 .

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

It is not an unprimeable number, because it can be changed into a prime (385542217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5669705 + ... + 5669772.

Almost surely, 2^385542218 is an apocalyptic number.

385542218 is a deficient number, since it is larger than the sum of its proper divisors (226789594).

385542218 is a wasteful number, since it uses less digits than its factorization.

385542218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11339496.

The product of its digits is 76800, while the sum is 38.

The square root of 385542218 is about 19635.2290029936. The cubic root of 385542218 is about 727.8199915706.

The spelling of 385542218 in words is "three hundred eighty-five million, five hundred forty-two thousand, two hundred eighteen".