18200928365497 has 2 divisors, whose sum is σ = 18200928365498. Its totient is φ = 18200928365496.

The previous prime is 18200928365441. The next prime is 18200928365509. The reversal of 18200928365497 is 79456382900281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18072055263376 + 128873102121 = 4251124^2 + 358989^2 .

It is a cyclic number.

It is not a de Polignac number, because 18200928365497 - 2²⁷ = 18200794147769 is a prime.

It is not a weakly prime, because it can be changed into another prime (18200928365597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9100464182748 + 9100464182749.

It is an arithmetic number, because the mean of its divisors is an integer number (9100464182749).

It is a 1-persistent number, because it is pandigital, but 2⋅18200928365497 = 36401856730994 is not.

Almost surely, 2^{18200928365497} is an apocalyptic number.

It is an amenable number.

18200928365497 is a deficient number, since it is larger than the sum of its proper divisors (1).

18200928365497 is an equidigital number, since it uses as much as digits as its factorization.

18200928365497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 18200928365497 in words is "eighteen trillion, two hundred billion, nine hundred twenty-eight million, three hundred sixty-five thousand, four hundred ninety-seven".