2105203445 has 8 divisors (see below), whose sum is σ = 2527873920. Its totient is φ = 1683076240.

The previous prime is 2105203403. The next prime is 2105203469. The reversal of 2105203445 is 5443025012.

It is a happy number.

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

It is not a de Polignac number, because 2105203445 - 2⁸ = 2105203189 is a prime.

It is a congruent number.

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, 127241 + ... + 142830.

It is an arithmetic number, because the mean of its divisors is an integer number (315984240).

Almost surely, 2^2105203445 is an apocalyptic number.

It is an amenable number.

2105203445 is a deficient number, since it is larger than the sum of its proper divisors (422670475).

2105203445 is a wasteful number, since it uses less digits than its factorization.

2105203445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271635.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2105203445 is about 45882.4960633137. The cubic root of 2105203445 is about 1281.6359788295.

Adding to 2105203445 its reverse (5443025012), we get a palindrome (7548228457).

The spelling of 2105203445 in words is "two billion, one hundred five million, two hundred three thousand, four hundred forty-five".