299538834138 has 40 divisors (see below), whose sum is σ = 671238922068. Its totient is φ = 99838832256.

The previous prime is 299538834137. The next prime is 299538834169. The reversal of 299538834138 is 831438835992.

299538834138 is a `hidden beast` number, since 2 + 9 + 9 + 538 + 83 + 4 + 13 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 237536340129 + 62002494009 = 487377^2 + 249003^2 .

It is not an unprimeable number, because it can be changed into a prime (299538834137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2377170 + ... + 2500002.

Almost surely, 2^299538834138 is an apocalyptic number.

299538834138 is an abundant number, since it is smaller than the sum of its proper divisors (371700087930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

299538834138 is a wasteful number, since it uses less digits than its factorization.

299538834138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137900 (or 137891 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 299538834138 in words is "two hundred ninety-nine billion, five hundred thirty-eight million, eight hundred thirty-four thousand, one hundred thirty-eight".