73041218 has 4 divisors (see below), whose sum is σ = 109561830. Its totient is φ = 36520608.

The previous prime is 73041211. The next prime is 73041257. The reversal of 73041218 is 81214037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81214037 = 19 ⋅4274423.

It can be written as a sum of positive squares in only one way, i.e., 70341769 + 2699449 = 8387^2 + 1643^2 .

It is not an unprimeable number, because it can be changed into a prime (73041211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18260303 + ... + 18260306.

Almost surely, 2^73041218 is an apocalyptic number.

73041218 is a deficient number, since it is larger than the sum of its proper divisors (36520612).

73041218 is a wasteful number, since it uses less digits than its factorization.

73041218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36520611.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 73041218 is about 8546.4155059300. The cubic root of 73041218 is about 418.0125642004.

The spelling of 73041218 in words is "seventy-three million, forty-one thousand, two hundred eighteen".