381518083 has 2 divisors, whose sum is σ = 381518084. Its totient is φ = 381518082.

The previous prime is 381518047. The next prime is 381518087. The reversal of 381518083 is 380815183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381518083 - 2⁹ = 381517571 is a prime.

It is a super-3 number, since 3×381518083³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (381518087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190759041 + 190759042.

It is an arithmetic number, because the mean of its divisors is an integer number (190759042).

Almost surely, 2^381518083 is an apocalyptic number.

381518083 is a deficient number, since it is larger than the sum of its proper divisors (1).

381518083 is an equidigital number, since it uses as much as digits as its factorization.

381518083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 381518083 is about 19532.4878855716. The cubic root of 381518083 is about 725.2788989595.

The spelling of 381518083 in words is "three hundred eighty-one million, five hundred eighteen thousand, eighty-three".