1678469163 has 16 divisors (see below), whose sum is σ = 2645863680. Its totient is φ = 926051616.

The previous prime is 1678469141. The next prime is 1678469171. The reversal of 1678469163 is 3619648761.

It is a happy number.

It is not a de Polignac number, because 1678469163 - 2¹⁰ = 1678468139 is a prime.

It is a super-2 number, since 2×1678469163² = 5634517462283841138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1678469113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1377445 + ... + 1378662.

It is an arithmetic number, because the mean of its divisors is an integer number (165366480).

Almost surely, 2^1678469163 is an apocalyptic number.

1678469163 is a deficient number, since it is larger than the sum of its proper divisors (967394517).

1678469163 is a wasteful number, since it uses less digits than its factorization.

1678469163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756146.

The product of its digits is 1306368, while the sum is 51.

The square root of 1678469163 is about 40969.1245085857. The cubic root of 1678469163 is about 1188.4232024252.

The spelling of 1678469163 in words is "one billion, six hundred seventy-eight million, four hundred sixty-nine thousand, one hundred sixty-three".