2091995 has 16 divisors (see below), whose sum is σ = 2693280. Its totient is φ = 1559520.

The previous prime is 2091983. The next prime is 2091997. The reversal of 2091995 is 5991902.

It is not a de Polignac number, because 2091995 - 2⁶ = 2091931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2091997) 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 15 ways as a sum of consecutive naturals, for example, 34265 + ... + 34325.

It is an arithmetic number, because the mean of its divisors is an integer number (168330).

2^2091995 is an apocalyptic number.

2091995 is a deficient number, since it is larger than the sum of its proper divisors (601285).

2091995 is an frugal number, since it uses more digits than its factorization.

2091995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 2091995 is about 1446.3730500808. The cubic root of 2091995 is about 127.8949944480.

The spelling of 2091995 in words is "two million, ninety-one thousand, nine hundred ninety-five".