1680365122 has 4 divisors (see below), whose sum is σ = 2520547686. Its totient is φ = 840182560.

The previous prime is 1680365087. The next prime is 1680365147. The reversal of 1680365122 is 2215630861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2215630861 = 1913 ⋅1158197.

It can be written as a sum of positive squares in only one way, i.e., 1680262081 + 103041 = 40991^2 + 321^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420091279 + ... + 420091282.

Almost surely, 2^1680365122 is an apocalyptic number.

1680365122 is a deficient number, since it is larger than the sum of its proper divisors (840182564).

1680365122 is an equidigital number, since it uses as much as digits as its factorization.

1680365122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840182563.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1680365122 is about 40992.2568541914. The cubic root of 1680365122 is about 1188.8705056108.

Adding to 1680365122 its reverse (2215630861), we get a palindrome (3895995983).

The spelling of 1680365122 in words is "one billion, six hundred eighty million, three hundred sixty-five thousand, one hundred twenty-two".