490803681 has 16 divisors (see below), whose sum is σ = 658886400. Its totient is φ = 324970368.

The previous prime is 490803679. The next prime is 490803707. The reversal of 490803681 is 186308094.

It is not a de Polignac number, because 490803681 - 2¹ = 490803679 is a prime.

It is a super-2 number, since 2×490803681² = 481776506566299522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (490803581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329320 + ... + 330806.

It is an arithmetic number, because the mean of its divisors is an integer number (41180400).

Almost surely, 2^490803681 is an apocalyptic number.

It is an amenable number.

490803681 is a deficient number, since it is larger than the sum of its proper divisors (168082719).

490803681 is a wasteful number, since it uses less digits than its factorization.

490803681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 490803681 is about 22154.0894870450. The cubic root of 490803681 is about 788.8043018397.

The spelling of 490803681 in words is "four hundred ninety million, eight hundred three thousand, six hundred eighty-one".