208549013 has 8 divisors (see below), whose sum is σ = 221057280. Its totient is φ = 196067520.

The previous prime is 208548973. The next prime is 208549021. The reversal of 208549013 is 310945802.

208549013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 208549013 - 2⁸ = 208548757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208549813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10658 + ... + 23036.

It is an arithmetic number, because the mean of its divisors is an integer number (27632160).

Almost surely, 2^208549013 is an apocalyptic number.

It is an amenable number.

208549013 is a deficient number, since it is larger than the sum of its proper divisors (12508267).

208549013 is a wasteful number, since it uses less digits than its factorization.

208549013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13387.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 208549013 is about 14441.2261598522. The cubic root of 208549013 is about 593.0200534099.

The spelling of 208549013 in words is "two hundred eight million, five hundred forty-nine thousand, thirteen".