381048389 has 4 divisors (see below), whose sum is σ = 381091980. Its totient is φ = 381004800.

The previous prime is 381048379. The next prime is 381048403. The reversal of 381048389 is 983840183.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 335256100 + 45792289 = 18310^2 + 6767^2 .

It is a cyclic number.

It is not a de Polignac number, because 381048389 - 2¹⁶ = 380982853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381048359) 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, 3644 + ... + 27845.

It is an arithmetic number, because the mean of its divisors is an integer number (95272995).

Almost surely, 2^381048389 is an apocalyptic number.

It is an amenable number.

381048389 is a deficient number, since it is larger than the sum of its proper divisors (43591).

381048389 is a wasteful number, since it uses less digits than its factorization.

381048389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43590.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 381048389 is about 19520.4607783730. The cubic root of 381048389 is about 724.9811419590.

The spelling of 381048389 in words is "three hundred eighty-one million, forty-eight thousand, three hundred eighty-nine".