2195715919 has 4 divisors (see below), whose sum is σ = 2195816320. Its totient is φ = 2195615520.

The previous prime is 2195715911. The next prime is 2195715931. The reversal of 2195715919 is 9195175912.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2195715919 - 2³ = 2195715911 is a prime.

It is a super-2 number, since 2×2195715919² = 9642336793900029122, 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 (2195715911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914 + ... + 66295.

It is an arithmetic number, because the mean of its divisors is an integer number (548954080).

Almost surely, 2^2195715919 is an apocalyptic number.

2195715919 is a deficient number, since it is larger than the sum of its proper divisors (100401).

2195715919 is an equidigital number, since it uses as much as digits as its factorization.

2195715919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100400.

The product of its digits is 255150, while the sum is 49.

The square root of 2195715919 is about 46858.4668869992. The cubic root of 2195715919 is about 1299.7466802268.

The spelling of 2195715919 in words is "two billion, one hundred ninety-five million, seven hundred fifteen thousand, nine hundred nineteen".