381687528837 has 16 divisors (see below), whose sum is σ = 520864475648. Its totient is φ = 248487024240.

The previous prime is 381687528779. The next prime is 381687528899. The reversal of 381687528837 is 738825786183.

It is not a de Polignac number, because 381687528837 - 2⁶ = 381687528773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381687528637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284262 + ... + 918792.

It is an arithmetic number, because the mean of its divisors is an integer number (32554029728).

Almost surely, 2^381687528837 is an apocalyptic number.

It is an amenable number.

381687528837 is a deficient number, since it is larger than the sum of its proper divisors (139176946811).

381687528837 is a wasteful number, since it uses less digits than its factorization.

381687528837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639240.

The product of its digits is 108380160, while the sum is 66.

The spelling of 381687528837 in words is "three hundred eighty-one billion, six hundred eighty-seven million, five hundred twenty-eight thousand, eight hundred thirty-seven".