381687528838 has 32 divisors (see below), whose sum is σ = 714512977920. Its totient is φ = 148561983360.

The previous prime is 381687528779. The next prime is 381687528899. The reversal of 381687528838 is 838825786183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1072806 + ... + 1383577.

It is an arithmetic number, because the mean of its divisors is an integer number (22328530560).

Almost surely, 2^381687528838 is an apocalyptic number.

381687528838 is a deficient number, since it is larger than the sum of its proper divisors (332825449082).

381687528838 is a wasteful number, since it uses less digits than its factorization.

381687528838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457412.

The product of its digits is 123863040, while the sum is 67.

The spelling of 381687528838 in words is "three hundred eighty-one billion, six hundred eighty-seven million, five hundred twenty-eight thousand, eight hundred thirty-eight".