2081653 has 8 divisors (see below), whose sum is σ = 2388672. Its totient is φ = 1777056.

The previous prime is 2081647. The next prime is 2081671. The reversal of 2081653 is 3561802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2081653 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2001 + ... + 2857.

It is an arithmetic number, because the mean of its divisors is an integer number (298584).

2^2081653 is an apocalyptic number.

It is an amenable number.

2081653 is a deficient number, since it is larger than the sum of its proper divisors (307019).

2081653 is an equidigital number, since it uses as much as digits as its factorization.

2081653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2081653 is about 1442.7934710138. The cubic root of 2081653 is about 127.6838920222.

The spelling of 2081653 in words is "two million, eighty-one thousand, six hundred fifty-three".