1678530663 has 12 divisors (see below), whose sum is σ = 2453756760. Its totient is φ = 1105537776.

The previous prime is 1678530629. The next prime is 1678530673. The reversal of 1678530663 is 3660358761.

It is not a de Polignac number, because 1678530663 - 2¹³ = 1678522471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678530673) 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 11 ways as a sum of consecutive naturals, for example, 1122768 + ... + 1124261.

It is an arithmetic number, because the mean of its divisors is an integer number (204479730).

Almost surely, 2^1678530663 is an apocalyptic number.

1678530663 is a deficient number, since it is larger than the sum of its proper divisors (775226097).

1678530663 is a wasteful number, since it uses less digits than its factorization.

1678530663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247118 (or 2247115 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 1678530663 is about 40969.8750669318. The cubic root of 1678530663 is about 1188.4377170667.

The spelling of 1678530663 in words is "one billion, six hundred seventy-eight million, five hundred thirty thousand, six hundred sixty-three".