381766383 has 12 divisors (see below), whose sum is σ = 563173728. Its totient is φ = 249095520.

The previous prime is 381766369. The next prime is 381766417. The reversal of 381766383 is 383667183.

381766383 is a `hidden beast` number, since 3 + 8 + 1 + 7 + 6 + 638 + 3 = 666.

It is not a de Polignac number, because 381766383 - 2⁹ = 381765871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381766303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450838 + ... + 451683.

It is an arithmetic number, because the mean of its divisors is an integer number (46931144).

Almost surely, 2^381766383 is an apocalyptic number.

381766383 is a deficient number, since it is larger than the sum of its proper divisors (181407345).

381766383 is a wasteful number, since it uses less digits than its factorization.

381766383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902574 (or 902571 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 381766383 is about 19538.8429288942. The cubic root of 381766383 is about 725.4362070965.

The spelling of 381766383 in words is "three hundred eighty-one million, seven hundred sixty-six thousand, three hundred eighty-three".