38321418 has 16 divisors (see below), whose sum is σ = 78714720. Its totient is φ = 12428496.

The previous prime is 38321407. The next prime is 38321419. The reversal of 38321418 is 81412383.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38321419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86088 + ... + 86531.

It is an arithmetic number, because the mean of its divisors is an integer number (4919670).

Almost surely, 2^38321418 is an apocalyptic number.

38321418 is an abundant number, since it is smaller than the sum of its proper divisors (40393302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38321418 is a wasteful number, since it uses less digits than its factorization.

38321418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172661.

The product of its digits is 4608, while the sum is 30.

The square root of 38321418 is about 6190.4295489085. The cubic root of 38321418 is about 337.1427748423.

The spelling of 38321418 in words is "thirty-eight million, three hundred twenty-one thousand, four hundred eighteen".