495218709 has 6 divisors (see below), whose sum is σ = 715315926. Its totient is φ = 330145800.

The previous prime is 495218701. The next prime is 495218723. The reversal of 495218709 is 907812594.

495218709 is a `hidden beast` number, since 49 + 521 + 87 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 363474225 + 131744484 = 19065^2 + 11478^2 .

It is not a de Polignac number, because 495218709 - 2³ = 495218701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495218701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27512142 + ... + 27512159.

It is an arithmetic number, because the mean of its divisors is an integer number (119219321).

Almost surely, 2^495218709 is an apocalyptic number.

It is an amenable number.

495218709 is a deficient number, since it is larger than the sum of its proper divisors (220097217).

495218709 is a wasteful number, since it uses less digits than its factorization.

495218709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55024307 (or 55024304 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 495218709 is about 22253.5100377446. The cubic root of 495218709 is about 791.1624764866.

The spelling of 495218709 in words is "four hundred ninety-five million, two hundred eighteen thousand, seven hundred nine".