2195486181 has 32 divisors (see below), whose sum is σ = 3722016000. Its totient is φ = 1252946880.

The previous prime is 2195486179. The next prime is 2195486201. The reversal of 2195486181 is 1816845912.

It is a happy number.

2195486181 is a `hidden beast` number, since 2 + 1 + 95 + 486 + 1 + 81 = 666.

It is not a de Polignac number, because 2195486181 - 2¹ = 2195486179 is a prime.

It is a super-2 number, since 2×2195486181² = 9640319141923929522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195486171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148095 + ... + 162243.

It is an arithmetic number, because the mean of its divisors is an integer number (116313000).

Almost surely, 2^2195486181 is an apocalyptic number.

2195486181 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2195486181 is a deficient number, since it is larger than the sum of its proper divisors (1526529819).

2195486181 is a wasteful number, since it uses less digits than its factorization.

2195486181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14986 (or 14980 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 2195486181 is about 46856.0154195809. The cubic root of 2195486181 is about 1299.7013477659.

The spelling of 2195486181 in words is "two billion, one hundred ninety-five million, four hundred eighty-six thousand, one hundred eighty-one".