18969608029 has 2 divisors, whose sum is σ = 18969608030. Its totient is φ = 18969608028.

The previous prime is 18969607991. The next prime is 18969608039. The reversal of 18969608029 is 92080696981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15593765625 + 3375842404 = 124875^2 + 58102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18969608029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18969608039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9484804014 + 9484804015.

It is an arithmetic number, because the mean of its divisors is an integer number (9484804015).

Almost surely, 2^18969608029 is an apocalyptic number.

It is an amenable number.

18969608029 is a deficient number, since it is larger than the sum of its proper divisors (1).

18969608029 is an equidigital number, since it uses as much as digits as its factorization.

18969608029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 58.

The spelling of 18969608029 in words is "eighteen billion, nine hundred sixty-nine million, six hundred eight thousand, twenty-nine".