2105388919 has 8 divisors (see below), whose sum is σ = 2281078800. Its totient is φ = 1935459456.

The previous prime is 2105388913. The next prime is 2105388931. The reversal of 2105388919 is 9198835012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105388919 is a prime.

It is a super-2 number, since 2×2105388919² = 8865325000495977122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105388913) 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, 1439344 + ... + 1440805.

It is an arithmetic number, because the mean of its divisors is an integer number (285134850).

Almost surely, 2^2105388919 is an apocalyptic number.

2105388919 is a deficient number, since it is larger than the sum of its proper divisors (175689881).

2105388919 is a wasteful number, since it uses less digits than its factorization.

2105388919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880209.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 2105388919 is about 45884.5172035187. The cubic root of 2105388919 is about 1281.6736162324.

The spelling of 2105388919 in words is "two billion, one hundred five million, three hundred eighty-eight thousand, nine hundred nineteen".