381613752 has 48 divisors (see below), whose sum is σ = 1113042840. Its totient is φ = 117419328.

The previous prime is 381613747. The next prime is 381613781. The reversal of 381613752 is 257316183.

381613752 is a `hidden beast` number, since 38 + 1 + 613 + 7 + 5 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202918 + ... + 204789.

Almost surely, 2^381613752 is an apocalyptic number.

It is an amenable number.

381613752 is an abundant number, since it is smaller than the sum of its proper divisors (731429088).

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

381613752 is a wasteful number, since it uses less digits than its factorization.

381613752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407732 (or 407725 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 381613752 is about 19534.9367032504. The cubic root of 381613752 is about 725.3395172378.

The spelling of 381613752 in words is "three hundred eighty-one million, six hundred thirteen thousand, seven hundred fifty-two".