29871058138 has 8 divisors (see below), whose sum is σ = 44966042100. Its totient is φ = 14882377440.

The previous prime is 29871058117. The next prime is 29871058171. The reversal of 29871058138 is 83185017892.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29328960049 + 542098089 = 171257^2 + 23283^2 .

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

It is a super-2 number, since 2×29871058138² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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, 26575113 + ... + 26576236.

Almost surely, 2^29871058138 is an apocalyptic number.

29871058138 is a deficient number, since it is larger than the sum of its proper divisors (15094983962).

29871058138 is a wasteful number, since it uses less digits than its factorization.

29871058138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53151632.

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 29871058138 in words is "twenty-nine billion, eight hundred seventy-one million, fifty-eight thousand, one hundred thirty-eight".