18200928365473 has 4 divisors (see below), whose sum is σ = 20801060989120. Its totient is φ = 15600795741828.

The previous prime is 18200928365441. The next prime is 18200928365497. The reversal of 18200928365473 is 37456382900281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18200928365473 - 2⁵ = 18200928365441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18200928360473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300066311813 + ... + 1300066311826.

It is an arithmetic number, because the mean of its divisors is an integer number (5200265247280).

It is a 1-persistent number, because it is pandigital, but 2⋅18200928365473 = 36401856730946 is not.

Almost surely, 2^{18200928365473} is an apocalyptic number.

It is an amenable number.

18200928365473 is a deficient number, since it is larger than the sum of its proper divisors (2600132623647).

18200928365473 is an equidigital number, since it uses as much as digits as its factorization.

18200928365473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600132623646.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 18200928365473 in words is "eighteen trillion, two hundred billion, nine hundred twenty-eight million, three hundred sixty-five thousand, four hundred seventy-three".