493812260257 has 4 divisors (see below), whose sum is σ = 495594976276. Its totient is φ = 492029544240.

The previous prime is 493812260243. The next prime is 493812260287. The reversal of 493812260257 is 752062218394.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59668321441 + 434143938816 = 244271^2 + 658896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493812260257 is a prime.

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 493812260257.

It is not an unprimeable number, because it can be changed into a prime (493812260287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891357594 + ... + 891358147.

It is an arithmetic number, because the mean of its divisors is an integer number (123898744069).

It is a 1-persistent number, because it is pandigital, but 2⋅493812260257 = 987624520514 is not.

Almost surely, 2^493812260257 is an apocalyptic number.

It is an amenable number.

493812260257 is a deficient number, since it is larger than the sum of its proper divisors (1782716019).

493812260257 is a wasteful number, since it uses less digits than its factorization.

493812260257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782716018.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 493812260257 in words is "four hundred ninety-three billion, eight hundred twelve million, two hundred sixty thousand, two hundred fifty-seven".