1688116145 has 16 divisors (see below), whose sum is σ = 2082041280. Its totient is φ = 1313237184.

The previous prime is 1688116109. The next prime is 1688116151. The reversal of 1688116145 is 5416118861.

It is a cyclic number.

It is not a de Polignac number, because 1688116145 - 2⁶ = 1688116081 is a prime.

It is a super-2 number, since 2×1688116145² = 5699472238019322050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31511 + ... + 66099.

It is an arithmetic number, because the mean of its divisors is an integer number (130127580).

Almost surely, 2^1688116145 is an apocalyptic number.

It is an amenable number.

1688116145 is a deficient number, since it is larger than the sum of its proper divisors (393925135).

1688116145 is a wasteful number, since it uses less digits than its factorization.

1688116145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34864.

The product of its digits is 46080, while the sum is 41.

The square root of 1688116145 is about 41086.6906065699. The cubic root of 1688116145 is about 1190.6956704883.

The spelling of 1688116145 in words is "one billion, six hundred eighty-eight million, one hundred sixteen thousand, one hundred forty-five".