208383481 has 2 divisors, whose sum is σ = 208383482. Its totient is φ = 208383480.

The previous prime is 208383421. The next prime is 208383491. The reversal of 208383481 is 184383802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161925625 + 46457856 = 12725^2 + 6816^2 .

It is a cyclic number.

It is not a de Polignac number, because 208383481 - 2¹³ = 208375289 is a prime.

It is a super-2 number, since 2×208383481² = 86847350307354722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208383481.

It is not a weakly prime, because it can be changed into another prime (208383421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104191740 + 104191741.

It is an arithmetic number, because the mean of its divisors is an integer number (104191741).

Almost surely, 2^208383481 is an apocalyptic number.

It is an amenable number.

208383481 is a deficient number, since it is larger than the sum of its proper divisors (1).

208383481 is an equidigital number, since it uses as much as digits as its factorization.

208383481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 208383481 is about 14435.4937913464. The cubic root of 208383481 is about 592.8631122390.

The spelling of 208383481 in words is "two hundred eight million, three hundred eighty-three thousand, four hundred eighty-one".