381260538 has 24 divisors (see below), whose sum is σ = 828160788. Its totient is φ = 126764352.

The previous prime is 381260533. The next prime is 381260549. The reversal of 381260538 is 835062183.

381260538 is a `hidden beast` number, since 3 + 8 + 12 + 605 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 343842849 + 37417689 = 18543^2 + 6117^2 .

It is not an unprimeable number, because it can be changed into a prime (381260533) 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 11 ways as a sum of consecutive naturals, for example, 19531 + ... + 33822.

Almost surely, 2^381260538 is an apocalyptic number.

381260538 is an abundant number, since it is smaller than the sum of its proper divisors (446900250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381260538 is a wasteful number, since it uses less digits than its factorization.

381260538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53758 (or 53755 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 381260538 is about 19525.8940384301. The cubic root of 381260538 is about 725.1156616106.

The spelling of 381260538 in words is "three hundred eighty-one million, two hundred sixty thousand, five hundred thirty-eight".