18364238 has 8 divisors (see below), whose sum is σ = 27651888. Its totient is φ = 9146944.

The previous prime is 18364219. The next prime is 18364253. The reversal of 18364238 is 83246381.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 18364198 and 18364207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16931 + ... + 17982.

It is an arithmetic number, because the mean of its divisors is an integer number (3456486).

Almost surely, 2^18364238 is an apocalyptic number.

18364238 is a deficient number, since it is larger than the sum of its proper divisors (9287650).

18364238 is a wasteful number, since it uses less digits than its factorization.

18364238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35178.

The product of its digits is 27648, while the sum is 35.

The square root of 18364238 is about 4285.3515608407. The cubic root of 18364238 is about 263.8300769859.

The spelling of 18364238 in words is "eighteen million, three hundred sixty-four thousand, two hundred thirty-eight".