29718195289 has 2 divisors, whose sum is σ = 29718195290. Its totient is φ = 29718195288.

The previous prime is 29718195277. The next prime is 29718195313. The reversal of 29718195289 is 98259181792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16646160400 + 13072034889 = 129020^2 + 114333^2 .

It is a cyclic number.

It is not a de Polignac number, because 29718195289 - 2⁹ = 29718194777 is a prime.

It is a super-2 number, since 2×29718195289² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29718195889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14859097644 + 14859097645.

It is an arithmetic number, because the mean of its divisors is an integer number (14859097645).

Almost surely, 2^29718195289 is an apocalyptic number.

It is an amenable number.

29718195289 is a deficient number, since it is larger than the sum of its proper divisors (1).

29718195289 is an equidigital number, since it uses as much as digits as its factorization.

29718195289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 61.

The spelling of 29718195289 in words is "twenty-nine billion, seven hundred eighteen million, one hundred ninety-five thousand, two hundred eighty-nine".