208513919000 has 64 divisors (see below), whose sum is σ = 490451120640. Its totient is φ = 82973337600.

The previous prime is 208513918997. The next prime is 208513919023. The reversal of 208513919000 is 919315802.

It is a super-2 number, since 2×208513919000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347192 + ... + 733191.

It is an arithmetic number, because the mean of its divisors is an integer number (7663298760).

Almost surely, 2^208513919000 is an apocalyptic number.

208513919000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208513919000 is an abundant number, since it is smaller than the sum of its proper divisors (281937201640).

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

208513919000 is a wasteful number, since it uses less digits than its factorization.

208513919000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080597 (or 1080583 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 208513919000 in words is "two hundred eight billion, five hundred thirteen million, nine hundred nineteen thousand".