1678485652 has 12 divisors (see below), whose sum is σ = 2937950260. Its totient is φ = 839071296.

The previous prime is 1678485643. The next prime is 1678485661. The reversal of 1678485652 is 2565848761.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1678485643) and next prime (1678485661).

It can be written as a sum of positive squares in 2 ways, for example, as 1392334596 + 286151056 = 37314^2 + 16916^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1678485652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19443 + ... + 61114.

Almost surely, 2^1678485652 is an apocalyptic number.

It is an amenable number.

1678485652 is a deficient number, since it is larger than the sum of its proper divisors (1259464608).

1678485652 is a wasteful number, since it uses less digits than its factorization.

1678485652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85770 (or 85768 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 52.

The square root of 1678485652 is about 40969.3257450010. The cubic root of 1678485652 is about 1188.4270940360.

The spelling of 1678485652 in words is "one billion, six hundred seventy-eight million, four hundred eighty-five thousand, six hundred fifty-two".