381853441 has 4 divisors (see below), whose sum is σ = 382158000. Its totient is φ = 381548884.

The previous prime is 381853399. The next prime is 381853471. The reversal of 381853441 is 144358183.

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, and also an emirpimes, since its reverse is a distinct semiprime: 144358183 = 109 ⋅1324387.

It is a cyclic number.

It is not a de Polignac number, because 381853441 - 2¹⁹ = 381329153 is a prime.

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 381853441.

It is not an unprimeable number, because it can be changed into a prime (381853471) 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, 150391 + ... + 152908.

It is an arithmetic number, because the mean of its divisors is an integer number (95539500).

Almost surely, 2^381853441 is an apocalyptic number.

It is an amenable number.

381853441 is a deficient number, since it is larger than the sum of its proper divisors (304559).

381853441 is a wasteful number, since it uses less digits than its factorization.

381853441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304558.

The product of its digits is 46080, while the sum is 37.

The square root of 381853441 is about 19541.0706206185. The cubic root of 381853441 is about 725.4913457259.

The spelling of 381853441 in words is "three hundred eighty-one million, eight hundred fifty-three thousand, four hundred forty-one".