2068449521 has 8 divisors (see below), whose sum is σ = 2085334944. Its totient is φ = 2051580960.

The previous prime is 2068449503. The next prime is 2068449533. The reversal of 2068449521 is 1259448602.

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 2068449521 - 2⁶ = 2068449457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2068449821) 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, 384170 + ... + 389516.

It is an arithmetic number, because the mean of its divisors is an integer number (260666868).

Almost surely, 2^2068449521 is an apocalyptic number.

It is an amenable number.

2068449521 is a deficient number, since it is larger than the sum of its proper divisors (16885423).

2068449521 is a wasteful number, since it uses less digits than its factorization.

2068449521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8431.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 2068449521 is about 45480.2102127948. The cubic root of 2068449521 is about 1274.1336205160.

The spelling of 2068449521 in words is "two billion, sixty-eight million, four hundred forty-nine thousand, five hundred twenty-one".