208196851 has 8 divisors (see below), whose sum is σ = 228683520. Its totient is φ = 188663112.

The previous prime is 208196839. The next prime is 208196873. The reversal of 208196851 is 158691802.

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

It is not a de Polignac number, because 208196851 - 2¹¹ = 208194803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208196831) 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, 237775 + ... + 238648.

It is an arithmetic number, because the mean of its divisors is an integer number (28585440).

Almost surely, 2^208196851 is an apocalyptic number.

208196851 is a deficient number, since it is larger than the sum of its proper divisors (20486669).

208196851 is a wasteful number, since it uses less digits than its factorization.

208196851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476465.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 208196851 is about 14429.0280684459. The cubic root of 208196851 is about 592.6860683096.

The spelling of 208196851 in words is "two hundred eight million, one hundred ninety-six thousand, eight hundred fifty-one".