494281691 has 8 divisors (see below), whose sum is σ = 507058944. Its totient is φ = 481538880.

The previous prime is 494281651. The next prime is 494281717. The reversal of 494281691 is 196182494.

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

It is a cyclic number.

It is not a de Polignac number, because 494281691 - 2¹⁰ = 494280667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494281621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21830 + ... + 38276.

It is an arithmetic number, because the mean of its divisors is an integer number (63382368).

Almost surely, 2^494281691 is an apocalyptic number.

494281691 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

494281691 is a deficient number, since it is larger than the sum of its proper divisors (12777253).

494281691 is a wasteful number, since it uses less digits than its factorization.

494281691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17221.

The product of its digits is 124416, while the sum is 44.

The square root of 494281691 is about 22232.4468064134. The cubic root of 494281691 is about 790.6631674430.

The spelling of 494281691 in words is "four hundred ninety-four million, two hundred eighty-one thousand, six hundred ninety-one".