208249494106 has 4 divisors (see below), whose sum is σ = 312374241162. Its totient is φ = 104124747052.

The previous prime is 208249494059. The next prime is 208249494109. The reversal of 208249494106 is 601494942802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 158411164081 + 49838330025 = 398009^2 + 223245^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 208249494106.

It is not an unprimeable number, because it can be changed into a prime (208249494109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52062373525 + ... + 52062373528.

Almost surely, 2^208249494106 is an apocalyptic number.

208249494106 is a deficient number, since it is larger than the sum of its proper divisors (104124747056).

208249494106 is a wasteful number, since it uses less digits than its factorization.

208249494106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104124747055.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 208249494106 in words is "two hundred eight billion, two hundred forty-nine million, four hundred ninety-four thousand, one hundred six".