371809438138 has 8 divisors (see below), whose sum is σ = 560545194132. Its totient is φ = 184961040096.

The previous prime is 371809438111. The next prime is 371809438139. The reversal of 371809438138 is 831834908173.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 266283864729 + 105525573409 = 516027^2 + 324847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (371809438139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471838995 + ... + 471839782.

Almost surely, 2^371809438138 is an apocalyptic number.

371809438138 is a deficient number, since it is larger than the sum of its proper divisors (188735755994).

371809438138 is a wasteful number, since it uses less digits than its factorization.

371809438138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943678976.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 371809438138 in words is "three hundred seventy-one billion, eight hundred nine million, four hundred thirty-eight thousand, one hundred thirty-eight".