29818493641 has 4 divisors (see below), whose sum is σ = 29819884932. Its totient is φ = 29817102352.

The previous prime is 29818493609. The next prime is 29818493669. The reversal of 29818493641 is 14639481892.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1061456400 + 28757037241 = 32580^2 + 169579^2 .

It is a cyclic number.

It is not a de Polignac number, because 29818493641 - 2⁵ = 29818493609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29818493141) 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, 662986 + ... + 706531.

It is an arithmetic number, because the mean of its divisors is an integer number (7454971233).

Almost surely, 2^29818493641 is an apocalyptic number.

It is an amenable number.

29818493641 is a deficient number, since it is larger than the sum of its proper divisors (1391291).

29818493641 is a wasteful number, since it uses less digits than its factorization.

29818493641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391290.

The product of its digits is 2985984, while the sum is 55.

The spelling of 29818493641 in words is "twenty-nine billion, eight hundred eighteen million, four hundred ninety-three thousand, six hundred forty-one".