38821801 has 4 divisors (see below), whose sum is σ = 39082500. Its totient is φ = 38561104.

The previous prime is 38821799. The next prime is 38821813. The reversal of 38821801 is 10812883.

38821801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15202201 + 23619600 = 3899^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 38821801 - 2¹ = 38821799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38821831) 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 3 ways as a sum of consecutive naturals, for example, 130126 + ... + 130423.

It is an arithmetic number, because the mean of its divisors is an integer number (9770625).

Almost surely, 2^38821801 is an apocalyptic number.

It is an amenable number.

38821801 is a deficient number, since it is larger than the sum of its proper divisors (260699).

38821801 is a wasteful number, since it uses less digits than its factorization.

38821801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260698.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 38821801 is about 6230.7143250192. The cubic root of 38821801 is about 338.6038509359.

The spelling of 38821801 in words is "thirty-eight million, eight hundred twenty-one thousand, eight hundred one".