1678120113 has 8 divisors (see below), whose sum is σ = 2238513408. Its totient is φ = 1118236784.

The previous prime is 1678120111. The next prime is 1678120121. The reversal of 1678120113 is 3110218761.

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

It is a cyclic number.

It is not a de Polignac number, because 1678120113 - 2¹ = 1678120111 is a prime.

It is a super-2 number, since 2×1678120113² = 5632174227310265538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1678120111) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 119745 + ... + 133022.

It is an arithmetic number, because the mean of its divisors is an integer number (279814176).

Almost surely, 2^1678120113 is an apocalyptic number.

It is an amenable number.

1678120113 is a deficient number, since it is larger than the sum of its proper divisors (560393295).

1678120113 is a wasteful number, since it uses less digits than its factorization.

1678120113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254983.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1678120113 is about 40964.8643718004. The cubic root of 1678120113 is about 1188.3408162672.

Adding to 1678120113 its reverse (3110218761), we get a palindrome (4788338874).

The spelling of 1678120113 in words is "one billion, six hundred seventy-eight million, one hundred twenty thousand, one hundred thirteen".