497519308818 has 72 divisors (see below), whose sum is σ = 1254233361420. Its totient is φ = 142116448320.

The previous prime is 497519308807. The next prime is 497519308841. The reversal of 497519308818 is 818803915794.

497519308818 is a `hidden beast` number, since 4 + 9 + 7 + 519 + 30 + 8 + 81 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 425525296329 + 71994012489 = 652323^2 + 268317^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 4014688 + ... + 4136756.

Almost surely, 2^497519308818 is an apocalyptic number.

497519308818 is an abundant number, since it is smaller than the sum of its proper divisors (756714052602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

497519308818 is a wasteful number, since it uses less digits than its factorization.

497519308818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126712 (or 126702 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 497519308818 in words is "four hundred ninety-seven billion, five hundred nineteen million, three hundred eight thousand, eight hundred eighteen".