493303638 has 16 divisors (see below), whose sum is σ = 992517120. Its totient is φ = 163449576.

The previous prime is 493303627. The next prime is 493303667. The reversal of 493303638 is 836303394.

It is a junction number, because it is equal to n+sod(n) for n = 493303596 and 493303605.

It is a congruent number.

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, 245158 + ... + 247161.

It is an arithmetic number, because the mean of its divisors is an integer number (62032320).

Almost surely, 2^493303638 is an apocalyptic number.

493303638 is an abundant number, since it is smaller than the sum of its proper divisors (499213482).

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

493303638 is a wasteful number, since it uses less digits than its factorization.

493303638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492491.

The product of its (nonzero) digits is 139968, while the sum is 39.

The square root of 493303638 is about 22210.4398425605. The cubic root of 493303638 is about 790.1413185206.

The spelling of 493303638 in words is "four hundred ninety-three million, three hundred three thousand, six hundred thirty-eight".