19932437089 has 2 divisors, whose sum is σ = 19932437090. Its totient is φ = 19932437088.

The previous prime is 19932437069. The next prime is 19932437099. The reversal of 19932437089 is 98073423991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18227160064 + 1705277025 = 135008^2 + 41295^2 .

It is a cyclic number.

It is not a de Polignac number, because 19932437089 - 2¹³ = 19932428897 is a prime.

It is not a weakly prime, because it can be changed into another prime (19932437029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9966218544 + 9966218545.

It is an arithmetic number, because the mean of its divisors is an integer number (9966218545).

Almost surely, 2^19932437089 is an apocalyptic number.

It is an amenable number.

19932437089 is a deficient number, since it is larger than the sum of its proper divisors (1).

19932437089 is an equidigital number, since it uses as much as digits as its factorization.

19932437089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 19932437089 in words is "nineteen billion, nine hundred thirty-two million, four hundred thirty-seven thousand, eighty-nine".