29911819589 has 2 divisors, whose sum is σ = 29911819590. Its totient is φ = 29911819588.

The previous prime is 29911819541. The next prime is 29911819591. The reversal of 29911819589 is 98591811992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29865715489 + 46104100 = 172817^2 + 6790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29911819589 is a prime.

It is a super-2 number, since 2×29911819589² (a number of 22 digits) contains 22 as substring.

Together with 29911819591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29911819519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14955909794 + 14955909795.

It is an arithmetic number, because the mean of its divisors is an integer number (14955909795).

Almost surely, 2^29911819589 is an apocalyptic number.

It is an amenable number.

29911819589 is a deficient number, since it is larger than the sum of its proper divisors (1).

29911819589 is an equidigital number, since it uses as much as digits as its factorization.

29911819589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 62.

The spelling of 29911819589 in words is "twenty-nine billion, nine hundred eleven million, eight hundred nineteen thousand, five hundred eighty-nine".