17988384049 has 2 divisors, whose sum is σ = 17988384050. Its totient is φ = 17988384048.

The previous prime is 17988384031. The next prime is 17988384067. The reversal of 17988384049 is 94048388971.

It is a balanced prime because it is at equal distance from previous prime (17988384031) and next prime (17988384067).

It can be written as a sum of positive squares in only one way, i.e., 12433365025 + 5555019024 = 111505^2 + 74532^2 .

It is a cyclic number.

It is not a de Polignac number, because 17988384049 - 2¹¹ = 17988382001 is a prime.

It is not a weakly prime, because it can be changed into another prime (17988384749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8994192024 + 8994192025.

It is an arithmetic number, because the mean of its divisors is an integer number (8994192025).

Almost surely, 2^17988384049 is an apocalyptic number.

It is an amenable number.

17988384049 is a deficient number, since it is larger than the sum of its proper divisors (1).

17988384049 is an equidigital number, since it uses as much as digits as its factorization.

17988384049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 17988384049 in words is "seventeen billion, nine hundred eighty-eight million, three hundred eighty-four thousand, forty-nine".