38505918 has 32 divisors (see below), whose sum is σ = 88957440. Its totient is φ = 10981760.

The previous prime is 38505917. The next prime is 38505949. The reversal of 38505918 is 81950583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38505911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16038 + ... + 18281.

It is an arithmetic number, because the mean of its divisors is an integer number (2779920).

Almost surely, 2^38505918 is an apocalyptic number.

38505918 is an abundant number, since it is smaller than the sum of its proper divisors (50451522).

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

38505918 is a wasteful number, since it uses less digits than its factorization.

38505918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34352.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 38505918 is about 6205.3136907009. The cubic root of 38505918 is about 337.6829712941.

The spelling of 38505918 in words is "thirty-eight million, five hundred five thousand, nine hundred eighteen".