18799728053 has 2 divisors, whose sum is σ = 18799728054. Its totient is φ = 18799728052.

The previous prime is 18799728029. The next prime is 18799728139. The reversal of 18799728053 is 35082799781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17672245969 + 1127482084 = 132937^2 + 33578^2 .

It is a cyclic number.

It is not a de Polignac number, because 18799728053 - 2¹⁰ = 18799727029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18799727983 and 18799728001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18799728023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9399864026 + 9399864027.

It is an arithmetic number, because the mean of its divisors is an integer number (9399864027).

Almost surely, 2^18799728053 is an apocalyptic number.

It is an amenable number.

18799728053 is a deficient number, since it is larger than the sum of its proper divisors (1).

18799728053 is an equidigital number, since it uses as much as digits as its factorization.

18799728053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 59.

The spelling of 18799728053 in words is "eighteen billion, seven hundred ninety-nine million, seven hundred twenty-eight thousand, fifty-three".