1680494998 has 16 divisors (see below), whose sum is σ = 3102452640. Its totient is φ = 664811136.

The previous prime is 1680494983. The next prime is 1680495017. The reversal of 1680494998 is 8994940861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4616563 + ... + 4616926.

It is an arithmetic number, because the mean of its divisors is an integer number (193903290).

Almost surely, 2^1680494998 is an apocalyptic number.

1680494998 is a deficient number, since it is larger than the sum of its proper divisors (1421957642).

1680494998 is a wasteful number, since it uses less digits than its factorization.

1680494998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9233511.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The square root of 1680494998 is about 40993.8409764199. The cubic root of 1680494998 is about 1188.9011342256.

The spelling of 1680494998 in words is "one billion, six hundred eighty million, four hundred ninety-four thousand, nine hundred ninety-eight".