208841545394 has 4 divisors (see below), whose sum is σ = 313262318094. Its totient is φ = 104420772696.

The previous prime is 208841545361. The next prime is 208841545411. The reversal of 208841545394 is 493545148802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 207002250625 + 1839294769 = 454975^2 + 42887^2 .

It is a super-2 number, since 2×208841545394² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52210386347 + ... + 52210386350.

Almost surely, 2^208841545394 is an apocalyptic number.

208841545394 is a deficient number, since it is larger than the sum of its proper divisors (104420772700).

208841545394 is a wasteful number, since it uses less digits than its factorization.

208841545394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104420772699.

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 208841545394 in words is "two hundred eight billion, eight hundred forty-one million, five hundred forty-five thousand, three hundred ninety-four".