381838173 has 16 divisors (see below), whose sum is σ = 540452160. Its totient is φ = 238968576.

The previous prime is 381838133. The next prime is 381838183. The reversal of 381838173 is 371838183.

It is not a de Polignac number, because 381838173 - 2⁶ = 381838109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381838103) 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, 10818 + ... + 29676.

It is an arithmetic number, because the mean of its divisors is an integer number (33778260).

Almost surely, 2^381838173 is an apocalyptic number.

It is an amenable number.

381838173 is a deficient number, since it is larger than the sum of its proper divisors (158613987).

381838173 is a wasteful number, since it uses less digits than its factorization.

381838173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19276.

The product of its digits is 96768, while the sum is 42.

The square root of 381838173 is about 19540.6799523456. The cubic root of 381838173 is about 725.4816762661.

It can be divided in two parts, 381 and 838173, that multiplied together give a palindrome (319343913).

The spelling of 381838173 in words is "three hundred eighty-one million, eight hundred thirty-eight thousand, one hundred seventy-three".