381818818183 has 12 divisors (see below), whose sum is σ = 419721002064. Its totient is φ = 347078362400.

The previous prime is 381818818103. The next prime is 381818818193.

381818818183 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 381818818183 - 2⁹ = 381818817671 is a prime.

It is a super-2 number, since 2×381818818183² (a number of 24 digits) contains 22 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 (381818818103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1355163 + ... + 1612483.

It is an arithmetic number, because the mean of its divisors is an integer number (34976750172).

Almost surely, 2^381818818183 is an apocalyptic number.

381818818183 is a deficient number, since it is larger than the sum of its proper divisors (37902183881).

381818818183 is a wasteful number, since it uses less digits than its factorization.

381818818183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269606 (or 269595 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 58.

The spelling of 381818818183 in words is "three hundred eighty-one billion, eight hundred eighteen million, eight hundred eighteen thousand, one hundred eighty-three".