1684543652 has 12 divisors (see below), whose sum is σ = 3215947056. Its totient is φ = 765701640.

The previous prime is 1684543631. The next prime is 1684543669. The reversal of 1684543652 is 2563454861.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 38285083 = 1684543652 / (1 + 6 + 8 + 4 + 5 + 4 + 3 + 6 + 5 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19142498 + ... + 19142585.

It is an arithmetic number, because the mean of its divisors is an integer number (267995588).

Almost surely, 2^1684543652 is an apocalyptic number.

It is an amenable number.

1684543652 is a deficient number, since it is larger than the sum of its proper divisors (1531403404).

1684543652 is a wasteful number, since it uses less digits than its factorization.

1684543652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38285098 (or 38285096 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The square root of 1684543652 is about 41043.1925171520. The cubic root of 1684543652 is about 1189.8551366630.

The spelling of 1684543652 in words is "one billion, six hundred eighty-four million, five hundred forty-three thousand, six hundred fifty-two".