381538171752 has 32 divisors (see below), whose sum is σ = 1004047821600. Its totient is φ = 120485738304.

The previous prime is 381538171673. The next prime is 381538171759. The reversal of 381538171752 is 257171835183.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 381538171695 and 381538171704.

It is not an unprimeable number, because it can be changed into a prime (381538171759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418352803 + ... + 418353714.

It is an arithmetic number, because the mean of its divisors is an integer number (31376494425).

Almost surely, 2^381538171752 is an apocalyptic number.

It is an amenable number.

381538171752 is an abundant number, since it is smaller than the sum of its proper divisors (622509649848).

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

381538171752 is a wasteful number, since it uses less digits than its factorization.

381538171752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836706545 (or 836706541 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 51.

The spelling of 381538171752 in words is "three hundred eighty-one billion, five hundred thirty-eight million, one hundred seventy-one thousand, seven hundred fifty-two".