1678112648 has 16 divisors (see below), whose sum is σ = 3154392780. Its totient is φ = 836941248.

The previous prime is 1678112647. The next prime is 1678112651. The reversal of 1678112648 is 8462118761.

It can be written as a sum of positive squares in 2 ways, for example, as 1672646404 + 5466244 = 40898^2 + 2338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1678112599 and 1678112608.

It is not an unprimeable number, because it can be changed into a prime (1678112641) 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, 261011 + ... + 267362.

Almost surely, 2^1678112648 is an apocalyptic number.

It is an amenable number.

1678112648 is a deficient number, since it is larger than the sum of its proper divisors (1476280132).

1678112648 is a wasteful number, since it uses less digits than its factorization.

1678112648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528776 (or 528772 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 1678112648 is about 40964.7732570315. The cubic root of 1678112648 is about 1188.3390541809.

It can be divided in two parts, 1678112 and 648, that multiplied together give a square (1087416576 = 32976²).

The spelling of 1678112648 in words is "one billion, six hundred seventy-eight million, one hundred twelve thousand, six hundred forty-eight".