493786261 has 4 divisors (see below), whose sum is σ = 500036800. Its totient is φ = 487535724.

The previous prime is 493786177. The next prime is 493786289. The reversal of 493786261 is 162687394.

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 an emirpimes, since its reverse is a distinct semiprime: 162687394 = 2 ⋅81343697.

It is a cyclic number.

It is not a de Polignac number, because 493786261 - 2¹⁷ = 493655189 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 (493786361) 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, 3125151 + ... + 3125308.

It is an arithmetic number, because the mean of its divisors is an integer number (125009200).

Almost surely, 2^493786261 is an apocalyptic number.

It is an amenable number.

493786261 is a deficient number, since it is larger than the sum of its proper divisors (6250539).

493786261 is an equidigital number, since it uses as much as digits as its factorization.

493786261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6250538.

The product of its digits is 435456, while the sum is 46.

The square root of 493786261 is about 22221.3019645564. The cubic root of 493786261 is about 790.3989124583.

The spelling of 493786261 in words is "four hundred ninety-three million, seven hundred eighty-six thousand, two hundred sixty-one".