381718083081 has 16 divisors (see below), whose sum is σ = 525391892480. Its totient is φ = 246262012560.

The previous prime is 381718083053. The next prime is 381718083083. The reversal of 381718083081 is 180380817183.

It is a happy number.

It is not a de Polignac number, because 381718083081 - 2⁷ = 381718082953 is a prime.

It is a super-2 number, since 2×381718083081² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381718083081.

It is not an unprimeable number, because it can be changed into a prime (381718083083) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5415060 + ... + 5485098.

It is an arithmetic number, because the mean of its divisors is an integer number (32836993280).

Almost surely, 2^381718083081 is an apocalyptic number.

381718083081 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

381718083081 is a deficient number, since it is larger than the sum of its proper divisors (143673809399).

381718083081 is a wasteful number, since it uses less digits than its factorization.

381718083081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128676.

The product of its (nonzero) digits is 258048, while the sum is 48.

The spelling of 381718083081 in words is "three hundred eighty-one billion, seven hundred eighteen million, eighty-three thousand, eighty-one".