381144395 has 4 divisors (see below), whose sum is σ = 457373280. Its totient is φ = 304915512.

The previous prime is 381144391. The next prime is 381144443. The reversal of 381144395 is 593441183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 593441183 = 5867 ⋅101149.

It is a cyclic number.

It is not a de Polignac number, because 381144395 - 2² = 381144391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381144391) 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, 38114435 + ... + 38114444.

It is an arithmetic number, because the mean of its divisors is an integer number (114343320).

Almost surely, 2^381144395 is an apocalyptic number.

381144395 is a deficient number, since it is larger than the sum of its proper divisors (76228885).

381144395 is an equidigital number, since it uses as much as digits as its factorization.

381144395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76228884.

The product of its digits is 51840, while the sum is 38.

The square root of 381144395 is about 19522.9197355314. The cubic root of 381144395 is about 725.0420237234.

The spelling of 381144395 in words is "three hundred eighty-one million, one hundred forty-four thousand, three hundred ninety-five".