18058413 has 4 divisors (see below), whose sum is σ = 24077888. Its totient is φ = 12038940.

The previous prime is 18058363. The next prime is 18058459. The reversal of 18058413 is 31485081.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31485081 = 3 ⋅10495027.

It is not a de Polignac number, because 18058413 - 2⁶ = 18058349 is a prime.

It is a super-2 number, since 2×18058413² = 652212560157138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18058483) 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, 3009733 + ... + 3009738.

It is an arithmetic number, because the mean of its divisors is an integer number (6019472).

Almost surely, 2^18058413 is an apocalyptic number.

It is an amenable number.

18058413 is a deficient number, since it is larger than the sum of its proper divisors (6019475).

18058413 is an equidigital number, since it uses as much as digits as its factorization.

18058413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019474.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18058413 is about 4249.5191492685. The cubic root of 18058413 is about 262.3573247341.

The spelling of 18058413 in words is "eighteen million, fifty-eight thousand, four hundred thirteen".