2053686491 has 8 divisors (see below), whose sum is σ = 2143518720. Its totient is φ = 1963899432.

The previous prime is 2053686461. The next prime is 2053686527. The reversal of 2053686491 is 1946863502.

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 2053686491 - 2¹⁴ = 2053670107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2053686461) 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 7 ways as a sum of consecutive naturals, for example, 109016 + ... + 126458.

It is an arithmetic number, because the mean of its divisors is an integer number (267939840).

Almost surely, 2^2053686491 is an apocalyptic number.

2053686491 is a deficient number, since it is larger than the sum of its proper divisors (89832229).

2053686491 is a wasteful number, since it uses less digits than its factorization.

2053686491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22585.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2053686491 is about 45317.6178875280. The cubic root of 2053686491 is about 1271.0951124193.

The spelling of 2053686491 in words is "two billion, fifty-three million, six hundred eighty-six thousand, four hundred ninety-one".