29201920193 has 4 divisors (see below), whose sum is σ = 29208222420. Its totient is φ = 29195617968.

The previous prime is 29201920157. The next prime is 29201920213. The reversal of 29201920193 is 39102910292.

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 9214464064 + 19987456129 = 95992^2 + 141377^2 .

It is a cyclic number.

It is not a de Polignac number, because 29201920193 - 2¹⁰ = 29201919169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29201923193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3144158 + ... + 3153431.

It is an arithmetic number, because the mean of its divisors is an integer number (7302055605).

Almost surely, 2^29201920193 is an apocalyptic number.

It is an amenable number.

29201920193 is a deficient number, since it is larger than the sum of its proper divisors (6302227).

29201920193 is an equidigital number, since it uses as much as digits as its factorization.

29201920193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6302226.

The product of its (nonzero) digits is 17496, while the sum is 38.

Subtracting 29201920193 from its reverse (39102910292), we obtain a palindrome (9900990099).

The spelling of 29201920193 in words is "twenty-nine billion, two hundred one million, nine hundred twenty thousand, one hundred ninety-three".