494116778 has 4 divisors (see below), whose sum is σ = 741175170. Its totient is φ = 247058388.

The previous prime is 494116769. The next prime is 494116811. The reversal of 494116778 is 877611494.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 476417929 + 17698849 = 21827^2 + 4207^2 .

It is a super-2 number, since 2×494116778² = 488302780602202568, which contains 22 as substring.

It is a Curzon 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 as a sum of consecutive naturals, namely, 123529193 + ... + 123529196.

Almost surely, 2^494116778 is an apocalyptic number.

494116778 is a deficient number, since it is larger than the sum of its proper divisors (247058392).

494116778 is a wasteful number, since it uses less digits than its factorization.

494116778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247058391.

The product of its digits is 338688, while the sum is 47.

The square root of 494116778 is about 22228.7376609649. The cubic root of 494116778 is about 790.5752249187.

The spelling of 494116778 in words is "four hundred ninety-four million, one hundred sixteen thousand, seven hundred seventy-eight".