1678852113 has 4 divisors (see below), whose sum is σ = 2238469488. Its totient is φ = 1119234740.

The previous prime is 1678852081. The next prime is 1678852121. The reversal of 1678852113 is 3112588761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3112588761 = 3 ⋅1037529587.

It is a cyclic number.

It is not a de Polignac number, because 1678852113 - 2⁵ = 1678852081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1678852163) 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, 279808683 + ... + 279808688.

It is an arithmetic number, because the mean of its divisors is an integer number (559617372).

Almost surely, 2^1678852113 is an apocalyptic number.

It is an amenable number.

1678852113 is a deficient number, since it is larger than the sum of its proper divisors (559617375).

1678852113 is an equidigital number, since it uses as much as digits as its factorization.

1678852113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559617374.

The product of its digits is 80640, while the sum is 42.

The square root of 1678852113 is about 40973.7978835255. The cubic root of 1678852113 is about 1188.5135768505.

The spelling of 1678852113 in words is "one billion, six hundred seventy-eight million, eight hundred fifty-two thousand, one hundred thirteen".