208830295549 has 2 divisors, whose sum is σ = 208830295550. Its totient is φ = 208830295548.

The previous prime is 208830295529. The next prime is 208830295571. The reversal of 208830295549 is 945592038802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208705526649 + 124768900 = 456843^2 + 11170^2 .

It is a cyclic number.

It is not a de Polignac number, because 208830295549 - 2¹³ = 208830287357 is a prime.

It is a super-2 number, since 2×208830295549² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208830295549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208830295529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104415147774 + 104415147775.

It is an arithmetic number, because the mean of its divisors is an integer number (104415147775).

Almost surely, 2^208830295549 is an apocalyptic number.

It is an amenable number.

208830295549 is a deficient number, since it is larger than the sum of its proper divisors (1).

208830295549 is an equidigital number, since it uses as much as digits as its factorization.

208830295549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 208830295549 in words is "two hundred eight billion, eight hundred thirty million, two hundred ninety-five thousand, five hundred forty-nine".