1662642244 has 6 divisors (see below), whose sum is σ = 2909623934. Its totient is φ = 831321120.

The previous prime is 1662642227. The next prime is 1662642259. The reversal of 1662642244 is 4422462661.

It can be written as a sum of positive squares in only one way, i.e., 1655513344 + 7128900 = 40688^2 + 2670^2 .

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 as a sum of consecutive naturals, namely, 207830277 + ... + 207830284.

Almost surely, 2^1662642244 is an apocalyptic number.

It is an amenable number.

1662642244 is a deficient number, since it is larger than the sum of its proper divisors (1246981690).

1662642244 is a wasteful number, since it uses less digits than its factorization.

1662642244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415660565 (or 415660563 counting only the distinct ones).

The product of its digits is 110592, while the sum is 37.

The square root of 1662642244 is about 40775.5103462851. The cubic root of 1662642244 is about 1184.6760362306.

The spelling of 1662642244 in words is "one billion, six hundred sixty-two million, six hundred forty-two thousand, two hundred forty-four".