1205861103 has 6 divisors (see below), whose sum is σ = 1741799384. Its totient is φ = 803907396.

The previous prime is 1205861071. The next prime is 1205861113. The reversal of 1205861103 is 3011685021.

It is not a de Polignac number, because 1205861103 - 2⁵ = 1205861071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205861113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66992275 + ... + 66992292.

Almost surely, 2^1205861103 is an apocalyptic number.

1205861103 is a deficient number, since it is larger than the sum of its proper divisors (535938281).

1205861103 is a wasteful number, since it uses less digits than its factorization.

1205861103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133984573 (or 133984570 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1205861103 is about 34725.5108385751. The cubic root of 1205861103 is about 1064.3858576475.

The spelling of 1205861103 in words is "one billion, two hundred five million, eight hundred sixty-one thousand, one hundred three".