29935638189 has 12 divisors (see below), whose sum is σ = 43241941600. Its totient is φ = 19956365064.

The previous prime is 29935638169. The next prime is 29935638199. The reversal of 29935638189 is 98183653992.

It is not a de Polignac number, because 29935638189 - 2¹² = 29935634093 is a prime.

It is a super-2 number, since 2×29935638189² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29935638169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338592 + ... + 417750.

Almost surely, 2^29935638189 is an apocalyptic number.

It is an amenable number.

29935638189 is a deficient number, since it is larger than the sum of its proper divisors (13306303411).

29935638189 is a wasteful number, since it uses less digits than its factorization.

29935638189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121184 (or 121181 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The spelling of 29935638189 in words is "twenty-nine billion, nine hundred thirty-five million, six hundred thirty-eight thousand, one hundred eighty-nine".