494336138 has 8 divisors (see below), whose sum is σ = 741615588. Its totient is φ = 247130944.

The previous prime is 494336123. The next prime is 494336147. The reversal of 494336138 is 831633494.

It can be written as a sum of positive squares in 2 ways, for example, as 441294049 + 53042089 = 21007^2 + 7283^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 494336095 and 494336104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3170 + ... + 31602.

Almost surely, 2^494336138 is an apocalyptic number.

494336138 is a deficient number, since it is larger than the sum of its proper divisors (247279450).

494336138 is a wasteful number, since it uses less digits than its factorization.

494336138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37128.

The product of its digits is 186624, while the sum is 41.

The square root of 494336138 is about 22233.6712667971. The cubic root of 494336138 is about 790.6921978911.

The spelling of 494336138 in words is "four hundred ninety-four million, three hundred thirty-six thousand, one hundred thirty-eight".