2147217795 has 32 divisors (see below), whose sum is σ = 3898506240. Its totient is φ = 1120813920.

The previous prime is 2147217763. The next prime is 2147217803. The reversal of 2147217795 is 5977127412.

2147217795 is a `hidden beast` number, since 2 + 1 + 472 + 177 + 9 + 5 = 666.

It is not a de Polignac number, because 2147217795 - 2⁵ = 2147217763 is a prime.

It is a super-2 number, since 2×2147217795² = 9221088518329324050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2147217795.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162861 + ... + 175550.

It is an arithmetic number, because the mean of its divisors is an integer number (121828320).

Almost surely, 2^2147217795 is an apocalyptic number.

2147217795 is a deficient number, since it is larger than the sum of its proper divisors (1751288445).

2147217795 is a wasteful number, since it uses less digits than its factorization.

2147217795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338472 (or 338466 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 2147217795 is about 46338.0814773335. The cubic root of 2147217795 is about 1290.1059134240.

The spelling of 2147217795 in words is "two billion, one hundred forty-seven million, two hundred seventeen thousand, seven hundred ninety-five".