499258622818 has 16 divisors (see below), whose sum is σ = 788326564320. Its totient is φ = 236483883936.

The previous prime is 499258622803. The next prime is 499258622843. The reversal of 499258622818 is 818226852994.

It is a super-3 number, since 3×499258622818³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 499258622818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1232605 + ... + 1586767.

It is an arithmetic number, because the mean of its divisors is an integer number (49270410270).

Almost surely, 2^499258622818 is an apocalyptic number.

499258622818 is a deficient number, since it is larger than the sum of its proper divisors (289067941502).

499258622818 is a wasteful number, since it uses less digits than its factorization.

499258622818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391281.

The product of its digits is 39813120, while the sum is 64.

The spelling of 499258622818 in words is "four hundred ninety-nine billion, two hundred fifty-eight million, six hundred twenty-two thousand, eight hundred eighteen".