213673418 has 12 divisors (see below), whose sum is σ = 372838482. Its totient is φ = 91574280.

The previous prime is 213673417. The next prime is 213673477. The reversal of 213673418 is 814376312.

It can be written as a sum of positive squares in only one way, i.e., 146482609 + 67190809 = 12103^2 + 8197^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (213673417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1090073 + ... + 1090268.

Almost surely, 2^213673418 is an apocalyptic number.

213673418 is a deficient number, since it is larger than the sum of its proper divisors (159165064).

213673418 is a wasteful number, since it uses less digits than its factorization.

213673418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180357 (or 2180350 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 213673418 is about 14617.5722334456. The cubic root of 213673418 is about 597.8379761866.

The spelling of 213673418 in words is "two hundred thirteen million, six hundred seventy-three thousand, four hundred eighteen".