381873 has 4 divisors (see below), whose sum is σ = 509168. Its totient is φ = 254580.

The previous prime is 381859. The next prime is 381911. The reversal of 381873 is 378183.

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 not a de Polignac number, because 381873 - 2⁵ = 381841 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381873.

It is not an unprimeable number, because it can be changed into a prime (381853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63643 + ... + 63648.

It is an arithmetic number, because the mean of its divisors is an integer number (127292).

2³⁸¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

381873 is a deficient number, since it is larger than the sum of its proper divisors (127295).

381873 is a wasteful number, since it uses less digits than its factorization.

381873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127294.

The product of its digits is 4032, while the sum is 30.

The square root of 381873 is about 617.9587364865. The cubic root of 381873 is about 72.5503732366.

The spelling of 381873 in words is "three hundred eighty-one thousand, eight hundred seventy-three".