29842821149 has 4 divisors (see below), whose sum is σ = 31140335136. Its totient is φ = 28545307164.

The previous prime is 29842821131. The next prime is 29842821157. The reversal of 29842821149 is 94112824892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29842821149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29842821097 and 29842821106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29842821199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648756959 + ... + 648757004.

It is an arithmetic number, because the mean of its divisors is an integer number (7785083784).

Almost surely, 2^29842821149 is an apocalyptic number.

It is an amenable number.

29842821149 is a deficient number, since it is larger than the sum of its proper divisors (1297513987).

29842821149 is a wasteful number, since it uses less digits than its factorization.

29842821149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297513986.

The product of its digits is 663552, while the sum is 50.

The spelling of 29842821149 in words is "twenty-nine billion, eight hundred forty-two million, eight hundred twenty-one thousand, one hundred forty-nine".