493968638 has 8 divisors (see below), whose sum is σ = 744276288. Its totient is φ = 245876544.

The previous prime is 493968617. The next prime is 493968641. The reversal of 493968638 is 836869394.

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

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, 553331 + ... + 554222.

It is an arithmetic number, because the mean of its divisors is an integer number (93034536).

Almost surely, 2^493968638 is an apocalyptic number.

493968638 is a deficient number, since it is larger than the sum of its proper divisors (250307650).

493968638 is a wasteful number, since it uses less digits than its factorization.

493968638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107778.

The product of its digits is 6718464, while the sum is 56.

The square root of 493968638 is about 22225.4052381503. The cubic root of 493968638 is about 790.4962101830.

The spelling of 493968638 in words is "four hundred ninety-three million, nine hundred sixty-eight thousand, six hundred thirty-eight".