381318474164 has 12 divisors (see below), whose sum is σ = 667441983684. Its totient is φ = 190620764544.

The previous prime is 381318474151. The next prime is 381318474179. The reversal of 381318474164 is 461474813183.

It can be written as a sum of positive squares in 2 ways, for example, as 339084936100 + 42233538064 = 582310^2 + 205508^2 .

It is a super-2 number, since 2×381318474164² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9595829 + ... + 9635484.

It is an arithmetic number, because the mean of its divisors is an integer number (55620165307).

Almost surely, 2^381318474164 is an apocalyptic number.

It is an amenable number.

381318474164 is a deficient number, since it is larger than the sum of its proper divisors (286123509520).

381318474164 is a wasteful number, since it uses less digits than its factorization.

381318474164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19236274 (or 19236272 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The spelling of 381318474164 in words is "three hundred eighty-one billion, three hundred eighteen million, four hundred seventy-four thousand, one hundred sixty-four".