29893718369 has 2 divisors, whose sum is σ = 29893718370. Its totient is φ = 29893718368.

The previous prime is 29893718363. The next prime is 29893718417. The reversal of 29893718369 is 96381739892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25556178769 + 4337539600 = 159863^2 + 65860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29893718369 is a prime.

It is a super-2 number, since 2×29893718369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29893718363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14946859184 + 14946859185.

It is an arithmetic number, because the mean of its divisors is an integer number (14946859185).

Almost surely, 2^29893718369 is an apocalyptic number.

It is an amenable number.

29893718369 is a deficient number, since it is larger than the sum of its proper divisors (1).

29893718369 is an equidigital number, since it uses as much as digits as its factorization.

29893718369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 65.

The spelling of 29893718369 in words is "twenty-nine billion, eight hundred ninety-three million, seven hundred eighteen thousand, three hundred sixty-nine".