381528885538 has 8 divisors (see below), whose sum is σ = 572321987280. Its totient is φ = 190754889780.

The previous prime is 381528885527. The next prime is 381528885541. The reversal of 381528885538 is 835588825183.

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

It is a super-3 number, since 3×381528885538³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 381528885538.

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, 4726468 + ... + 4806511.

It is an arithmetic number, because the mean of its divisors is an integer number (71540248410).

Almost surely, 2^381528885538 is an apocalyptic number.

381528885538 is a deficient number, since it is larger than the sum of its proper divisors (190793101742).

381528885538 is a wasteful number, since it uses less digits than its factorization.

381528885538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9552992.

The product of its digits is 73728000, while the sum is 64.

The spelling of 381528885538 in words is "three hundred eighty-one billion, five hundred twenty-eight million, eight hundred eighty-five thousand, five hundred thirty-eight".