493991166 has 8 divisors (see below), whose sum is σ = 987982344. Its totient is φ = 164663720.

The previous prime is 493991153. The next prime is 493991189. The reversal of 493991166 is 661199394.

It is a sphenic number, since it is the product of 3 distinct primes.

493991166 is an admirable number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 41165925 + ... + 41165936.

It is an arithmetic number, because the mean of its divisors is an integer number (123497793).

Almost surely, 2^493991166 is an apocalyptic number.

493991166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

493991166 is a wasteful number, since it uses less digits than its factorization.

493991166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82331866.

The product of its digits is 314928, while the sum is 48.

The square root of 493991166 is about 22225.9120397792. The cubic root of 493991166 is about 790.5082271591.

The spelling of 493991166 in words is "four hundred ninety-three million, nine hundred ninety-one thousand, one hundred sixty-six".