2195810 has 16 divisors (see below), whose sum is σ = 4124736. Its totient is φ = 840048.

The previous prime is 2195801. The next prime is 2195819. The reversal of 2195810 is 185912.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2195801) and next prime (2195819).

It is a super-2 number, since 2×2195810² = 9643163112200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2195810.

It is not an unprimeable number, because it can be changed into a prime (2195819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4544 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (257796).

2^2195810 is an apocalyptic number.

2195810 is a deficient number, since it is larger than the sum of its proper divisors (1928926).

2195810 is a wasteful number, since it uses less digits than its factorization.

2195810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9577.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 2195810 is about 1481.8265755479. The cubic root of 2195810 is about 129.9765243606.

The spelling of 2195810 in words is "two million, one hundred ninety-five thousand, eight hundred ten".