18074513 has 4 divisors (see below), whose sum is σ = 18216960. Its totient is φ = 17932068.

The previous prime is 18074501. The next prime is 18074531. The reversal of 18074513 is 31547081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18074513 - 2¹⁴ = 18058129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18074533) 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, 71033 + ... + 71286.

It is an arithmetic number, because the mean of its divisors is an integer number (4554240).

Almost surely, 2^18074513 is an apocalyptic number.

It is an amenable number.

18074513 is a deficient number, since it is larger than the sum of its proper divisors (142447).

18074513 is a wasteful number, since it uses less digits than its factorization.

18074513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142446.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 18074513 is about 4251.4130592075. The cubic root of 18074513 is about 262.4352699049.

The spelling of 18074513 in words is "eighteen million, seventy-four thousand, five hundred thirteen".