1680430546 has 8 divisors (see below), whose sum is σ = 2543771340. Its totient is φ = 832506768.

The previous prime is 1680430541. The next prime is 1680430553. The reversal of 1680430546 is 6450340861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1643086225 + 37344321 = 40535^2 + 6111^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1680430541) 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, 3853981 + ... + 3854416.

Almost surely, 2^1680430546 is an apocalyptic number.

1680430546 is a deficient number, since it is larger than the sum of its proper divisors (863340794).

1680430546 is a wasteful number, since it uses less digits than its factorization.

1680430546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708508.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 1680430546 is about 40993.0548507915. The cubic root of 1680430546 is about 1188.8859347287.

The spelling of 1680430546 in words is "one billion, six hundred eighty million, four hundred thirty thousand, five hundred forty-six".