2086643653 has 8 divisors (see below), whose sum is σ = 2122165760. Its totient is φ = 2051164080.

The previous prime is 2086643591. The next prime is 2086643659. The reversal of 2086643653 is 3563466802.

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

It is a cyclic number.

It is not a de Polignac number, because 2086643653 - 2¹⁷ = 2086512581 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 (2086643659) 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, 97576 + ... + 117022.

It is an arithmetic number, because the mean of its divisors is an integer number (265270720).

Almost surely, 2^2086643653 is an apocalyptic number.

It is an amenable number.

2086643653 is a deficient number, since it is larger than the sum of its proper divisors (35522107).

2086643653 is a wasteful number, since it uses less digits than its factorization.

2086643653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21267.

The product of its (nonzero) digits is 622080, while the sum is 43.

The square root of 2086643653 is about 45679.7948003272. The cubic root of 2086643653 is about 1277.8584904661.

The spelling of 2086643653 in words is "two billion, eighty-six million, six hundred forty-three thousand, six hundred fifty-three".