29718900173 has 2 divisors, whose sum is σ = 29718900174. Its totient is φ = 29718900172.

The previous prime is 29718900163. The next prime is 29718900191. The reversal of 29718900173 is 37100981792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27895012324 + 1823887849 = 167018^2 + 42707^2 .

It is a cyclic number.

It is not a de Polignac number, because 29718900173 - 2⁶ = 29718900109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29718900163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14859450086 + 14859450087.

It is an arithmetic number, because the mean of its divisors is an integer number (14859450087).

Almost surely, 2^29718900173 is an apocalyptic number.

It is an amenable number.

29718900173 is a deficient number, since it is larger than the sum of its proper divisors (1).

29718900173 is an equidigital number, since it uses as much as digits as its factorization.

29718900173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 29718900173 in words is "twenty-nine billion, seven hundred eighteen million, nine hundred thousand, one hundred seventy-three".