18493413 has 8 divisors (see below), whose sum is σ = 24806208. Its totient is φ = 12254784.

The previous prime is 18493393. The next prime is 18493421. The reversal of 18493413 is 31439481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18493413 - 2¹⁴ = 18477029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18491413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17956 + ... + 18957.

It is an arithmetic number, because the mean of its divisors is an integer number (3100776).

Almost surely, 2^18493413 is an apocalyptic number.

It is an amenable number.

18493413 is a deficient number, since it is larger than the sum of its proper divisors (6312795).

18493413 is a wasteful number, since it uses less digits than its factorization.

18493413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37083.

The product of its digits is 10368, while the sum is 33.

The square root of 18493413 is about 4300.3968421531. The cubic root of 18493413 is about 264.4472303465.

The spelling of 18493413 in words is "eighteen million, four hundred ninety-three thousand, four hundred thirteen".