1662556516 has 12 divisors (see below), whose sum is σ = 2958787440. Its totient is φ = 817188680.

The previous prime is 1662556471. The next prime is 1662556549. The reversal of 1662556516 is 6156552661.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3522130 + ... + 3522601.

It is an arithmetic number, because the mean of its divisors is an integer number (246565620).

Almost surely, 2^1662556516 is an apocalyptic number.

It is an amenable number.

1662556516 is a deficient number, since it is larger than the sum of its proper divisors (1296230924).

1662556516 is a wasteful number, since it uses less digits than its factorization.

1662556516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7044794 (or 7044792 counting only the distinct ones).

The product of its digits is 324000, while the sum is 43.

The square root of 1662556516 is about 40774.4591135186. The cubic root of 1662556516 is about 1184.6556747341.

The spelling of 1662556516 in words is "one billion, six hundred sixty-two million, five hundred fifty-six thousand, five hundred sixteen".