74216018 has 4 divisors (see below), whose sum is σ = 111324030. Its totient is φ = 37108008.

The previous prime is 74216011. The next prime is 74216039. The reversal of 74216018 is 81061247.

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., 68939809 + 5276209 = 8303^2 + 2297^2 .

It is not an unprimeable number, because it can be changed into a prime (74216011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18554003 + ... + 18554006.

Almost surely, 2^74216018 is an apocalyptic number.

74216018 is a deficient number, since it is larger than the sum of its proper divisors (37108012).

74216018 is a wasteful number, since it uses less digits than its factorization.

74216018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37108011.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 74216018 is about 8614.8719085080. The cubic root of 74216018 is about 420.2417693421.

The spelling of 74216018 in words is "seventy-four million, two hundred sixteen thousand, eighteen".