18238107 has 8 divisors (see below), whose sum is σ = 24553984. Its totient is φ = 12040488.

The previous prime is 18238097. The next prime is 18238109. The reversal of 18238107 is 70183281.

It is a happy number.

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

It is not a de Polignac number, because 18238107 - 2¹⁸ = 17975963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18238109) 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, 29203 + ... + 29820.

It is an arithmetic number, because the mean of its divisors is an integer number (3069248).

Almost surely, 2^18238107 is an apocalyptic number.

18238107 is a deficient number, since it is larger than the sum of its proper divisors (6315877).

18238107 is a wasteful number, since it uses less digits than its factorization.

18238107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59129.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 18238107 is about 4270.6096754445. The cubic root of 18238107 is about 263.2246679069.

The spelling of 18238107 in words is "eighteen million, two hundred thirty-eight thousand, one hundred seven".