493143481 has 4 divisors (see below), whose sum is σ = 493210192. Its totient is φ = 493076772.

The previous prime is 493143467. The next prime is 493143487. The reversal of 493143481 is 184341394.

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.

It is a cyclic number.

It is not a de Polignac number, because 493143481 - 2²¹ = 491046329 is a prime.

It is a super-3 number, since 3×493143481³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 493143481.

It is not an unprimeable number, because it can be changed into a prime (493143487) 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, 20655 + ... + 37588.

It is an arithmetic number, because the mean of its divisors is an integer number (123302548).

Almost surely, 2^493143481 is an apocalyptic number.

It is an amenable number.

493143481 is a deficient number, since it is larger than the sum of its proper divisors (66711).

493143481 is an equidigital number, since it uses as much as digits as its factorization.

493143481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66710.

The product of its digits is 41472, while the sum is 37.

The square root of 493143481 is about 22206.8341057432. The cubic root of 493143481 is about 790.0557996158.

The spelling of 493143481 in words is "four hundred ninety-three million, one hundred forty-three thousand, four hundred eighty-one".