381513588 has 48 divisors (see below), whose sum is σ = 912629760. Its totient is φ = 124002144.

The previous prime is 381513571. The next prime is 381513607. The reversal of 381513588 is 885315183.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 87795 + ... + 92037.

It is an arithmetic number, because the mean of its divisors is an integer number (19013120).

Almost surely, 2^381513588 is an apocalyptic number.

It is an amenable number.

381513588 is an abundant number, since it is smaller than the sum of its proper divisors (531116172).

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

381513588 is a wasteful number, since it uses less digits than its factorization.

381513588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 4434 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 381513588 is about 19532.3728205254. The cubic root of 381513588 is about 725.2760505655.

The spelling of 381513588 in words is "three hundred eighty-one million, five hundred thirteen thousand, five hundred eighty-eight".