381782275 has 18 divisors (see below), whose sum is σ = 550703220. Its totient is φ = 261792720.

The previous prime is 381782227. The next prime is 381782279. The reversal of 381782275 is 572287183.

It is a de Polignac number, because none of the positive numbers 2^k-381782275 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381782279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 154605 + ... + 157054.

Almost surely, 2^381782275 is an apocalyptic number.

381782275 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

381782275 is a deficient number, since it is larger than the sum of its proper divisors (168920945).

381782275 is a wasteful number, since it uses less digits than its factorization.

381782275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311683 (or 311671 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 381782275 is about 19539.2496017631. The cubic root of 381782275 is about 725.4462730014.

The spelling of 381782275 in words is "three hundred eighty-one million, seven hundred eighty-two thousand, two hundred seventy-five".