38502018 has 48 divisors (see below), whose sum is σ = 88745280. Its totient is φ = 12029472.

The previous prime is 38502011. The next prime is 38502049. The reversal of 38502018 is 81020583.

It is a happy number.

38502018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 38501982 and 38502000.

It is not an unprimeable number, because it can be changed into a prime (38502011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34680 + ... + 35772.

It is an arithmetic number, because the mean of its divisors is an integer number (1848860).

Almost surely, 2^38502018 is an apocalyptic number.

38502018 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38502018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44372640).

38502018 is an abundant number, since it is smaller than the sum of its proper divisors (50243262).

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

38502018 is a wasteful number, since it uses less digits than its factorization.

38502018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 38502018 is about 6204.9994359387. Note that the first 3 decimals coincide. The cubic root of 38502018 is about 337.6715703794.

The spelling of 38502018 in words is "thirty-eight million, five hundred two thousand, eighteen".