2043653 has 4 divisors (see below), whose sum is σ = 2046528. Its totient is φ = 2040780.

The previous prime is 2043647. The next prime is 2043673. The reversal of 2043653 is 3563402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2043653 - 2⁴ = 2043637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500 + ... + 2082.

It is an arithmetic number, because the mean of its divisors is an integer number (511632).

2^2043653 is an apocalyptic number.

It is an amenable number.

2043653 is a deficient number, since it is larger than the sum of its proper divisors (2875).

2043653 is a wasteful number, since it uses less digits than its factorization.

2043653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 2043653 is about 1429.5639195223. The cubic root of 2043653 is about 126.9021711323.

The spelling of 2043653 in words is "two million, forty-three thousand, six hundred fifty-three".