29859851369 has 2 divisors, whose sum is σ = 29859851370. Its totient is φ = 29859851368.

The previous prime is 29859851353. The next prime is 29859851459. The reversal of 29859851369 is 96315895892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22857508969 + 7002342400 = 151187^2 + 83680^2 .

It is a cyclic number.

It is not a de Polignac number, because 29859851369 - 2⁴ = 29859851353 is a prime.

It is a super-2 number, since 2×29859851369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29859853369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14929925684 + 14929925685.

It is an arithmetic number, because the mean of its divisors is an integer number (14929925685).

Almost surely, 2^29859851369 is an apocalyptic number.

It is an amenable number.

29859851369 is a deficient number, since it is larger than the sum of its proper divisors (1).

29859851369 is an equidigital number, since it uses as much as digits as its factorization.

29859851369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41990400, while the sum is 65.

The spelling of 29859851369 in words is "twenty-nine billion, eight hundred fifty-nine million, eight hundred fifty-one thousand, three hundred sixty-nine".