381347532 has 36 divisors (see below), whose sum is σ = 977545296. Its totient is φ = 125324640.

The previous prime is 381347531. The next prime is 381347543. The reversal of 381347532 is 235743183.

381347532 is a `hidden beast` number, since 3 + 81 + 3 + 47 + 532 = 666.

381347532 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

381347532 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (381347531) 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, 72043 + ... + 77154.

It is an arithmetic number, because the mean of its divisors is an integer number (27154036).

Almost surely, 2^381347532 is an apocalyptic number.

It is an amenable number.

381347532 is an abundant number, since it is smaller than the sum of its proper divisors (596197764).

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

381347532 is a wasteful number, since it uses less digits than its factorization.

381347532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149278 (or 149273 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 381347532 is about 19528.1215686507. The cubic root of 381347532 is about 725.1708084270.

The spelling of 381347532 in words is "three hundred eighty-one million, three hundred forty-seven thousand, five hundred thirty-two".