208198891802 has 16 divisors (see below), whose sum is σ = 341798843232. Its totient is φ = 94327596720.

The previous prime is 208198891783. The next prime is 208198891861.

208198891802 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15406253 + ... + 15419760.

It is an arithmetic number, because the mean of its divisors is an integer number (21362427702).

Almost surely, 2^208198891802 is an apocalyptic number.

208198891802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

208198891802 is a deficient number, since it is larger than the sum of its proper divisors (133599951430).

208198891802 is a wasteful number, since it uses less digits than its factorization.

208198891802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30826333.

The product of its (nonzero) digits is 1327104, while the sum is 56.

The spelling of 208198891802 in words is "two hundred eight billion, one hundred ninety-eight million, eight hundred ninety-one thousand, eight hundred two".