18463413 has 4 divisors (see below), whose sum is σ = 24617888. Its totient is φ = 12308940.

The previous prime is 18463399. The next prime is 18463427. The reversal of 18463413 is 31436481.

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 an interprime number because it is at equal distance from previous prime (18463399) and next prime (18463427).

It is not a de Polignac number, because 18463413 - 2⁵ = 18463381 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 (18463453) 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, 3077233 + ... + 3077238.

It is an arithmetic number, because the mean of its divisors is an integer number (6154472).

Almost surely, 2^18463413 is an apocalyptic number.

It is an amenable number.

18463413 is a deficient number, since it is larger than the sum of its proper divisors (6154475).

18463413 is an equidigital number, since it uses as much as digits as its factorization.

18463413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154474.

The product of its digits is 6912, while the sum is 30.

The square root of 18463413 is about 4296.9073762417. The cubic root of 18463413 is about 264.3041575915.

Adding to 18463413 its reverse (31436481), we get a palindrome (49899894).

The spelling of 18463413 in words is "eighteen million, four hundred sixty-three thousand, four hundred thirteen".