381057329 has 8 divisors (see below), whose sum is σ = 403665768. Its totient is φ = 358470400.

The previous prime is 381057289. The next prime is 381057343. The reversal of 381057329 is 923750183.

It can be written as a sum of positive squares in 4 ways, for example, as 41576704 + 339480625 = 6448^2 + 18425^2 .

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 381057329 - 2²⁴ = 364280113 is a prime.

It is a super-2 number, since 2×381057329² = 290409375969228482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381057292 and 381057301.

It is not an unprimeable number, because it can be changed into a prime (381057359) 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, 44279 + ... + 52179.

It is an arithmetic number, because the mean of its divisors is an integer number (50458221).

Almost surely, 2^381057329 is an apocalyptic number.

It is an amenable number.

381057329 is a deficient number, since it is larger than the sum of its proper divisors (22608439).

381057329 is a wasteful number, since it uses less digits than its factorization.

381057329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10755.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 381057329 is about 19520.6897675261. The cubic root of 381057329 is about 724.9868116507.

The spelling of 381057329 in words is "three hundred eighty-one million, fifty-seven thousand, three hundred twenty-nine".