538042915138 has 8 divisors (see below), whose sum is σ = 820294936380. Its totient is φ = 264611269680.

The previous prime is 538042915127. The next prime is 538042915141. The reversal of 538042915138 is 831519240835.

It can be written as a sum of positive squares in 2 ways, for example, as 462866597649 + 75176317489 = 680343^2 + 274183^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 538042915091 and 538042915100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2205093793 + ... + 2205094036.

Almost surely, 2^538042915138 is an apocalyptic number.

538042915138 is a deficient number, since it is larger than the sum of its proper divisors (282252021242).

538042915138 is a wasteful number, since it uses less digits than its factorization.

538042915138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410187892.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 538042915138 in words is "five hundred thirty-eight billion, forty-two million, nine hundred fifteen thousand, one hundred thirty-eight".