208112905018 has 8 divisors (see below), whose sum is σ = 313329839220. Its totient is φ = 103669625280.

The previous prime is 208112904997. The next prime is 208112905019. The reversal of 208112905018 is 810509211802.

It can be written as a sum of positive squares in 2 ways, for example, as 207915024529 + 197880489 = 455977^2 + 14067^2 .

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

It is not an unprimeable number, because it can be changed into a prime (208112905019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193412943 + ... + 193414018.

Almost surely, 2^208112905018 is an apocalyptic number.

208112905018 is a deficient number, since it is larger than the sum of its proper divisors (105216934202).

208112905018 is a wasteful number, since it uses less digits than its factorization.

208112905018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386827232.

The product of its (nonzero) digits is 11520, while the sum is 37.

The spelling of 208112905018 in words is "two hundred eight billion, one hundred twelve million, nine hundred five thousand, eighteen".