384138073 has 4 divisors (see below), whose sum is σ = 419059728. Its totient is φ = 349216420.

The previous prime is 384138071. The next prime is 384138091. The reversal of 384138073 is 370831483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 384138073 - 2¹ = 384138071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384138071) 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, 17460811 + ... + 17460832.

It is an arithmetic number, because the mean of its divisors is an integer number (104764932).

Almost surely, 2^384138073 is an apocalyptic number.

It is an amenable number.

384138073 is a deficient number, since it is larger than the sum of its proper divisors (34921655).

384138073 is a wasteful number, since it uses less digits than its factorization.

384138073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34921654.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 384138073 is about 19599.4406297731. The cubic root of 384138073 is about 726.9353431143.

It can be divided in two parts, 3841 and 38073, that added together give a palindrome (41914).

The spelling of 384138073 in words is "three hundred eighty-four million, one hundred thirty-eight thousand, seventy-three".