385194218 has 4 divisors (see below), whose sum is σ = 577791330. Its totient is φ = 192597108.

The previous prime is 385194203. The next prime is 385194289. The reversal of 385194218 is 812491583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 316021729 + 69172489 = 17777^2 + 8317^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96298553 + ... + 96298556.

Almost surely, 2^385194218 is an apocalyptic number.

385194218 is a deficient number, since it is larger than the sum of its proper divisors (192597112).

385194218 is a wasteful number, since it uses less digits than its factorization.

385194218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192597111.

The product of its digits is 69120, while the sum is 41.

The square root of 385194218 is about 19626.3653792545. The cubic root of 385194218 is about 727.6009428391.

The spelling of 385194218 in words is "three hundred eighty-five million, one hundred ninety-four thousand, two hundred eighteen".