474221618 has 8 divisors (see below), whose sum is σ = 766050348. Its totient is φ = 218871504.

The previous prime is 474221617. The next prime is 474221623. The reversal of 474221618 is 816122474.

It can be written as a sum of positive squares in 2 ways, for example, as 351300049 + 122921569 = 18743^2 + 11087^2 .

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

It is a super-2 number, since 2×474221618² = 449772285957075848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (474221611) 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, 9119621 + ... + 9119672.

Almost surely, 2^474221618 is an apocalyptic number.

474221618 is a deficient number, since it is larger than the sum of its proper divisors (291828730).

474221618 is a wasteful number, since it uses less digits than its factorization.

474221618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18239308.

The product of its digits is 21504, while the sum is 35.

The square root of 474221618 is about 21776.6300882391. The cubic root of 474221618 is about 779.8189465812.

The spelling of 474221618 in words is "four hundred seventy-four million, two hundred twenty-one thousand, six hundred eighteen".