38221820039 has 4 divisors (see below), whose sum is σ = 41161960056. Its totient is φ = 35281680024.

The previous prime is 38221820009. The next prime is 38221820071. The reversal of 38221820039 is 93002812283.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38221820039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38221819984 and 38221820011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38221820009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470069989 + ... + 1470070014.

It is an arithmetic number, because the mean of its divisors is an integer number (10290490014).

Almost surely, 2^38221820039 is an apocalyptic number.

38221820039 is a deficient number, since it is larger than the sum of its proper divisors (2940140017).

38221820039 is a wasteful number, since it uses less digits than its factorization.

38221820039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940140016.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 38221820039 in words is "thirty-eight billion, two hundred twenty-one million, eight hundred twenty thousand, thirty-nine".