205190103 has 8 divisors (see below), whose sum is σ = 274035568. Its totient is φ = 136569024.

The previous prime is 205190099. The next prime is 205190129. The reversal of 205190103 is 301091502.

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

It is not a de Polignac number, because 205190103 - 2² = 205190099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205190103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205190143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53950 + ... + 57627.

It is an arithmetic number, because the mean of its divisors is an integer number (34254446).

Almost surely, 2^205190103 is an apocalyptic number.

205190103 is a deficient number, since it is larger than the sum of its proper divisors (68845465).

205190103 is a wasteful number, since it uses less digits than its factorization.

205190103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112193.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 205190103 is about 14324.4582096497. The cubic root of 205190103 is about 589.8190606701.

The spelling of 205190103 in words is "two hundred five million, one hundred ninety thousand, one hundred three".