381328869 has 8 divisors (see below), whose sum is σ = 508540032. Its totient is φ = 254168480.

The previous prime is 381328867. The next prime is 381328877. The reversal of 381328869 is 968823183.

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 381328869 - 2¹ = 381328867 is a prime.

It is a super-2 number, since 2×381328869² = 290823412665638322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381328867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11329 + ... + 29849.

It is an arithmetic number, because the mean of its divisors is an integer number (63567504).

Almost surely, 2^381328869 is an apocalyptic number.

It is an amenable number.

381328869 is a deficient number, since it is larger than the sum of its proper divisors (127211163).

381328869 is a wasteful number, since it uses less digits than its factorization.

381328869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25387.

The product of its digits is 497664, while the sum is 48.

The square root of 381328869 is about 19527.6437134643. The cubic root of 381328869 is about 725.1589783748.

The spelling of 381328869 in words is "three hundred eighty-one million, three hundred twenty-eight thousand, eight hundred sixty-nine".