208986418 has 16 divisors (see below), whose sum is σ = 330791040. Its totient is φ = 98825056.

The previous prime is 208986409. The next prime is 208986419. The reversal of 208986418 is 814689802.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (208986419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21430 + ... + 29617.

It is an arithmetic number, because the mean of its divisors is an integer number (20674440).

Almost surely, 2^208986418 is an apocalyptic number.

208986418 is a deficient number, since it is larger than the sum of its proper divisors (121804622).

208986418 is a wasteful number, since it uses less digits than its factorization.

208986418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51161.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 208986418 is about 14456.3625438767. The cubic root of 208986418 is about 593.4343585780.

The spelling of 208986418 in words is "two hundred eight million, nine hundred eighty-six thousand, four hundred eighteen".