381265983 has 24 divisors (see below), whose sum is σ = 630115200. Its totient is φ = 217615824.

The previous prime is 381265981. The next prime is 381266051. The reversal of 381265983 is 389562183.

It is a happy number.

381265983 is a `hidden beast` number, since 38 + 1 + 26 + 598 + 3 = 666.

It is not a de Polignac number, because 381265983 - 2¹ = 381265981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381265981) 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 23 ways as a sum of consecutive naturals, for example, 61228 + ... + 67166.

It is an arithmetic number, because the mean of its divisors is an integer number (26254800).

Almost surely, 2^381265983 is an apocalyptic number.

381265983 is a deficient number, since it is larger than the sum of its proper divisors (248849217).

381265983 is a wasteful number, since it uses less digits than its factorization.

381265983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971 (or 6968 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 381265983 is about 19526.0334681676. The cubic root of 381265983 is about 725.1191135248.

The spelling of 381265983 in words is "three hundred eighty-one million, two hundred sixty-five thousand, nine hundred eighty-three".