381144769 has 8 divisors (see below), whose sum is σ = 404888000. Its totient is φ = 357769872.

The previous prime is 381144749. The next prime is 381144773. The reversal of 381144769 is 967441183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381144769 - 2¹¹ = 381142721 is a prime.

It is a super-2 number, since 2×381144769² = 290542669872126722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381144739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89949 + ... + 94090.

It is an arithmetic number, because the mean of its divisors is an integer number (50611000).

Almost surely, 2^381144769 is an apocalyptic number.

It is an amenable number.

381144769 is a deficient number, since it is larger than the sum of its proper divisors (23743231).

381144769 is a wasteful number, since it uses less digits than its factorization.

381144769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184167.

The product of its digits is 145152, while the sum is 43.

The square root of 381144769 is about 19522.9293140143. The cubic root of 381144769 is about 725.0422608738.

The spelling of 381144769 in words is "three hundred eighty-one million, one hundred forty-four thousand, seven hundred sixty-nine".