381718081471 has 4 divisors (see below), whose sum is σ = 386549956000. Its totient is φ = 376886206944.

The previous prime is 381718081463. The next prime is 381718081499. The reversal of 381718081471 is 174180817183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174180817183 = 8089 ⋅21533047.

It is a cyclic number.

It is not a de Polignac number, because 381718081471 - 2³ = 381718081463 is a prime.

It is a super-3 number, since 3×381718081471³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381718081271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2415937146 + ... + 2415937303.

It is an arithmetic number, because the mean of its divisors is an integer number (96637489000).

Almost surely, 2^381718081471 is an apocalyptic number.

381718081471 is a deficient number, since it is larger than the sum of its proper divisors (4831874529).

381718081471 is an equidigital number, since it uses as much as digits as its factorization.

381718081471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831874528.

The product of its (nonzero) digits is 301056, while the sum is 49.

The spelling of 381718081471 in words is "three hundred eighty-one billion, seven hundred eighteen million, eighty-one thousand, four hundred seventy-one".