29814821916 has 24 divisors (see below), whose sum is σ = 75892274304. Its totient is φ = 9034794480.

The previous prime is 29814821891. The next prime is 29814821921. The reversal of 29814821916 is 61912841892.

It is a super-2 number, since 2×29814821916² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112934800 + ... + 112935063.

It is an arithmetic number, because the mean of its divisors is an integer number (3162178096).

Almost surely, 2^29814821916 is an apocalyptic number.

It is an amenable number.

29814821916 is an abundant number, since it is smaller than the sum of its proper divisors (46077452388).

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

29814821916 is a wasteful number, since it uses less digits than its factorization.

29814821916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225869881 (or 225869879 counting only the distinct ones).

The product of its digits is 497664, while the sum is 51.

The spelling of 29814821916 in words is "twenty-nine billion, eight hundred fourteen million, eight hundred twenty-one thousand, nine hundred sixteen".