381633242 has 8 divisors (see below), whose sum is σ = 574072596. Its totient is φ = 190275712.

The previous prime is 381633233. The next prime is 381633283. The reversal of 381633242 is 242336183.

It can be written as a sum of positive squares in 2 ways, for example, as 376709281 + 4923961 = 19409^2 + 2219^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 381633199 and 381633208.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 269573 + ... + 270984.

Almost surely, 2^381633242 is an apocalyptic number.

381633242 is a deficient number, since it is larger than the sum of its proper divisors (192439354).

381633242 is a wasteful number, since it uses less digits than its factorization.

381633242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540912.

The product of its digits is 20736, while the sum is 32.

The square root of 381633242 is about 19535.4355467187. The cubic root of 381633242 is about 725.3518653485.

The spelling of 381633242 in words is "three hundred eighty-one million, six hundred thirty-three thousand, two hundred forty-two".