2105344155 has 8 divisors (see below), whose sum is σ = 3368550672. Its totient is φ = 1122850208.

The previous prime is 2105344147. The next prime is 2105344177. The reversal of 2105344155 is 5514435012.

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

It is a cyclic number.

It is not a de Polignac number, because 2105344155 - 2³ = 2105344147 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70178124 + ... + 70178153.

It is an arithmetic number, because the mean of its divisors is an integer number (421068834).

Almost surely, 2^2105344155 is an apocalyptic number.

2105344155 is a deficient number, since it is larger than the sum of its proper divisors (1263206517).

2105344155 is a wasteful number, since it uses less digits than its factorization.

2105344155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140356285.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2105344155 is about 45884.0294111143. The cubic root of 2105344155 is about 1281.6645326780.

Adding to 2105344155 its reverse (5514435012), we get a palindrome (7619779167).

The spelling of 2105344155 in words is "two billion, one hundred five million, three hundred forty-four thousand, one hundred fifty-five".