2195749985 has 32 divisors (see below), whose sum is σ = 3154007808. Its totient is φ = 1446232320.

The previous prime is 2195749949. The next prime is 2195750003. The reversal of 2195749985 is 5899475912.

It is not a de Polignac number, because 2195749985 - 2⁸ = 2195749729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8924 + ... + 66866.

It is an arithmetic number, because the mean of its divisors is an integer number (98562744).

Almost surely, 2^2195749985 is an apocalyptic number.

It is an amenable number.

2195749985 is a deficient number, since it is larger than the sum of its proper divisors (958257823).

2195749985 is a wasteful number, since it uses less digits than its factorization.

2195749985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58025.

The product of its digits is 8164800, while the sum is 59.

The square root of 2195749985 is about 46858.8303844644. The cubic root of 2195749985 is about 1299.7534019435.

The spelling of 2195749985 in words is "two billion, one hundred ninety-five million, seven hundred forty-nine thousand, nine hundred eighty-five".