29816876749 has 12 divisors (see below), whose sum is σ = 32793064668. Its totient is φ = 27090419840.

The previous prime is 29816876717. The next prime is 29816876767. The reversal of 29816876749 is 94767861892.

It can be written as a sum of positive squares in 2 ways, for example, as 24364088100 + 5452788649 = 156090^2 + 73843^2 .

It is not a de Polignac number, because 29816876749 - 2⁵ = 29816876717 is a prime.

It is a super-2 number, since 2×29816876749² (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 (29816879749) 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, 138597 + ... + 280789.

It is an arithmetic number, because the mean of its divisors is an integer number (2732755389).

Almost surely, 2^29816876749 is an apocalyptic number.

It is an amenable number.

29816876749 is a deficient number, since it is larger than the sum of its proper divisors (2976187919).

29816876749 is a wasteful number, since it uses less digits than its factorization.

29816876749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143948 (or 143937 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 67.

The spelling of 29816876749 in words is "twenty-nine billion, eight hundred sixteen million, eight hundred seventy-six thousand, seven hundred forty-nine".