2195651771 has 8 divisors (see below), whose sum is σ = 2208767280. Its totient is φ = 2182567392.

The previous prime is 2195651747. The next prime is 2195651789. The reversal of 2195651771 is 1771565912.

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 2195651771 - 2¹⁰ = 2195650747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2195651701) 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, 142196 + ... + 156878.

It is an arithmetic number, because the mean of its divisors is an integer number (276095910).

Almost surely, 2^2195651771 is an apocalyptic number.

2195651771 is a deficient number, since it is larger than the sum of its proper divisors (13115509).

2195651771 is a wasteful number, since it uses less digits than its factorization.

2195651771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15565.

The product of its digits is 132300, while the sum is 44.

The square root of 2195651771 is about 46857.7823952436. The cubic root of 2195651771 is about 1299.7340227056.

The spelling of 2195651771 in words is "two billion, one hundred ninety-five million, six hundred fifty-one thousand, seven hundred seventy-one".