471215218 has 4 divisors (see below), whose sum is σ = 706822830. Its totient is φ = 235607608.

The previous prime is 471215207. The next prime is 471215249. The reversal of 471215218 is 812512174.

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., 470325969 + 889249 = 21687^2 + 943^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 471215218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117803803 + ... + 117803806.

Almost surely, 2^471215218 is an apocalyptic number.

471215218 is a deficient number, since it is larger than the sum of its proper divisors (235607612).

471215218 is a wasteful number, since it uses less digits than its factorization.

471215218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235607611.

The product of its digits is 4480, while the sum is 31.

The square root of 471215218 is about 21707.4922089126. The cubic root of 471215218 is about 778.1675249373.

The spelling of 471215218 in words is "four hundred seventy-one million, two hundred fifteen thousand, two hundred eighteen".