499189870864 has 20 divisors (see below), whose sum is σ = 990770141340. Its totient is φ = 243507253760.

The previous prime is 499189870849. The next prime is 499189870873. The reversal of 499189870864 is 468078981994.

It can be written as a sum of positive squares in 2 ways, for example, as 13252614400 + 485937256464 = 115120^2 + 697092^2 .

It is a super-2 number, since 2×499189870864² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380479429 + ... + 380480740.

It is an arithmetic number, because the mean of its divisors is an integer number (49538507067).

Almost surely, 2^499189870864 is an apocalyptic number.

It is an amenable number.

499189870864 is a deficient number, since it is larger than the sum of its proper divisors (491580270476).

499189870864 is a wasteful number, since it uses less digits than its factorization.

499189870864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760960218 (or 760960212 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 73.

The spelling of 499189870864 in words is "four hundred ninety-nine billion, one hundred eighty-nine million, eight hundred seventy thousand, eight hundred sixty-four".