208182804493 has 2 divisors, whose sum is σ = 208182804494. Its totient is φ = 208182804492.

The previous prime is 208182804451. The next prime is 208182804503. The reversal of 208182804493 is 394408281802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147350035044 + 60832769449 = 383862^2 + 246643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208182804493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208182804413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104091402246 + 104091402247.

It is an arithmetic number, because the mean of its divisors is an integer number (104091402247).

Almost surely, 2^208182804493 is an apocalyptic number.

It is an amenable number.

208182804493 is a deficient number, since it is larger than the sum of its proper divisors (1).

208182804493 is an equidigital number, since it uses as much as digits as its factorization.

208182804493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 208182804493 in words is "two hundred eight billion, one hundred eighty-two million, eight hundred four thousand, four hundred ninety-three".