29389138187 has 2 divisors, whose sum is σ = 29389138188. Its totient is φ = 29389138186.

The previous prime is 29389138169. The next prime is 29389138243. The reversal of 29389138187 is 78183198392.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29389138187 - 2⁸ = 29389137931 is a prime.

It is not a weakly prime, because it can be changed into another prime (29389138787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14694569093 + 14694569094.

It is an arithmetic number, because the mean of its divisors is an integer number (14694569094).

Almost surely, 2^29389138187 is an apocalyptic number.

29389138187 is a deficient number, since it is larger than the sum of its proper divisors (1).

29389138187 is an equidigital number, since it uses as much as digits as its factorization.

29389138187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 59.

The spelling of 29389138187 in words is "twenty-nine billion, three hundred eighty-nine million, one hundred thirty-eight thousand, one hundred eighty-seven".