208103841856 has 63 divisors (see below), whose sum is σ = 417162374589. Its totient is φ = 103002697728.

The previous prime is 208103841823. The next prime is 208103841857. The reversal of 208103841856 is 658148301802.

The square root of 208103841856 is 456184.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 127174971456 + 80928870400 = 356616^2 + 284480^2 .

It is not an unprimeable number, because it can be changed into a prime (208103841857) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 463482720 + ... + 463483168.

Almost surely, 2^208103841856 is an apocalyptic number.

208103841856 is the 456184-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208103841856

208103841856 is an abundant number, since it is smaller than the sum of its proper divisors (209058532733).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208103841856 is an frugal number, since it uses more digits than its factorization.

208103841856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 208103841856 in words is "two hundred eight billion, one hundred three million, eight hundred forty-one thousand, eight hundred fifty-six".