2195956217 has 24 divisors (see below), whose sum is σ = 2895782400. Its totient is φ = 1646005536.

The previous prime is 2195956201. The next prime is 2195956219. The reversal of 2195956217 is 7126595912.

2195956217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2195956217 - 2⁴ = 2195956201 is a prime.

It is a super-3 number, since 3×2195956217³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2195956219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78617 + ... + 102822.

It is an arithmetic number, because the mean of its divisors is an integer number (120657600).

Almost surely, 2^2195956217 is an apocalyptic number.

It is an amenable number.

2195956217 is a deficient number, since it is larger than the sum of its proper divisors (699826183).

2195956217 is a wasteful number, since it uses less digits than its factorization.

2195956217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181485 (or 181478 counting only the distinct ones).

The product of its digits is 340200, while the sum is 47.

The square root of 2195956217 is about 46861.0308998852. The cubic root of 2195956217 is about 1299.7940930291.

The spelling of 2195956217 in words is "two billion, one hundred ninety-five million, nine hundred fifty-six thousand, two hundred seventeen".