495781549 has 4 divisors (see below), whose sum is σ = 496489500. Its totient is φ = 495073600.

The previous prime is 495781541. The next prime is 495781571. The reversal of 495781549 is 945187594.

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 369331524 + 126450025 = 19218^2 + 11245^2 .

It is a cyclic number.

It is not a de Polignac number, because 495781549 - 2³ = 495781541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 495781496 and 495781505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495781541) 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, 352924 + ... + 354325.

It is an arithmetic number, because the mean of its divisors is an integer number (124122375).

Almost surely, 2^495781549 is an apocalyptic number.

It is an amenable number.

495781549 is a deficient number, since it is larger than the sum of its proper divisors (707951).

495781549 is an equidigital number, since it uses as much as digits as its factorization.

495781549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707950.

The product of its digits is 1814400, while the sum is 52.

The square root of 495781549 is about 22266.1525414698. The cubic root of 495781549 is about 791.4620944707.

The spelling of 495781549 in words is "four hundred ninety-five million, seven hundred eighty-one thousand, five hundred forty-nine".