18153413 has 4 divisors (see below), whose sum is σ = 18183360. Its totient is φ = 18123468.

The previous prime is 18153389. The next prime is 18153427. The reversal of 18153413 is 31435181.

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: 31435181 = 23 ⋅1366747.

It is a cyclic number.

It is not a de Polignac number, because 18153413 - 2¹⁶ = 18087877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18155413) 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, 14045 + ... + 15282.

It is an arithmetic number, because the mean of its divisors is an integer number (4545840).

Almost surely, 2^18153413 is an apocalyptic number.

It is an amenable number.

18153413 is a deficient number, since it is larger than the sum of its proper divisors (29947).

18153413 is an equidigital number, since it uses as much as digits as its factorization.

18153413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29946.

The product of its digits is 1440, while the sum is 26.

The square root of 18153413 is about 4260.6822223677. The cubic root of 18153413 is about 262.8165819104.

Adding to 18153413 its reverse (31435181), we get a palindrome (49588594).

The spelling of 18153413 in words is "eighteen million, one hundred fifty-three thousand, four hundred thirteen".