494041681 has 4 divisors (see below), whose sum is σ = 564619072. Its totient is φ = 423464292.

The previous prime is 494041631. The next prime is 494041693. The reversal of 494041681 is 186140494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186140494 = 2 ⋅93070247.

It is a cyclic number.

It is not a de Polignac number, because 494041681 - 2¹¹ = 494039633 is a prime.

It is a super-2 number, since 2×494041681² = 488154365130611522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494041681.

It is not an unprimeable number, because it can be changed into a prime (494041621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35288685 + ... + 35288698.

It is an arithmetic number, because the mean of its divisors is an integer number (141154768).

Almost surely, 2^494041681 is an apocalyptic number.

It is an amenable number.

494041681 is a deficient number, since it is larger than the sum of its proper divisors (70577391).

494041681 is an equidigital number, since it uses as much as digits as its factorization.

494041681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70577390.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 494041681 is about 22227.0484095392. The cubic root of 494041681 is about 790.5351717448.

The spelling of 494041681 in words is "four hundred ninety-four million, forty-one thousand, six hundred eighty-one".