1686800053 has 2 divisors, whose sum is σ = 1686800054. Its totient is φ = 1686800052.

The previous prime is 1686800047. The next prime is 1686800077. The reversal of 1686800053 is 3500086861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241716644 + 445083409 = 35238^2 + 21097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1686800053 - 2²⁵ = 1653245621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1686799985 and 1686800021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1686800023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843400026 + 843400027.

It is an arithmetic number, because the mean of its divisors is an integer number (843400027).

Almost surely, 2^1686800053 is an apocalyptic number.

It is an amenable number.

1686800053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686800053 is an equidigital number, since it uses as much as digits as its factorization.

1686800053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1686800053 is about 41070.6714456922. The cubic root of 1686800053 is about 1190.3861593079.

The spelling of 1686800053 in words is "one billion, six hundred eighty-six million, eight hundred thousand, fifty-three".