493778841669 has 16 divisors (see below), whose sum is σ = 731775106240. Its totient is φ = 329072991120.

The previous prime is 493778841667. The next prime is 493778841709. The reversal of 493778841669 is 966148877394.

493778841669 is a `hidden beast` number, since 4 + 9 + 3 + 77 + 88 + 416 + 69 = 666.

It is not a de Polignac number, because 493778841669 - 2¹ = 493778841667 is a prime.

It is a super-2 number, since 2×493778841669² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 493778841597 and 493778841606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493778841667) 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 15 ways as a sum of consecutive naturals, for example, 3055987 + ... + 3213504.

It is an arithmetic number, because the mean of its divisors is an integer number (45735944140).

Almost surely, 2^493778841669 is an apocalyptic number.

It is an amenable number.

493778841669 is a deficient number, since it is larger than the sum of its proper divisors (237996264571).

493778841669 is a wasteful number, since it uses less digits than its factorization.

493778841669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6272417 (or 6272411 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 72.

The spelling of 493778841669 in words is "four hundred ninety-three billion, seven hundred seventy-eight million, eight hundred forty-one thousand, six hundred sixty-nine".