1662199712 has 12 divisors (see below), whose sum is σ = 3272455746. Its totient is φ = 831099840.

The previous prime is 1662199709. The next prime is 1662199733. The reversal of 1662199712 is 2179912661.

It can be written as a sum of positive squares in only one way, i.e., 1239321616 + 422878096 = 35204^2 + 20564^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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, 25971839 + ... + 25971902.

Almost surely, 2^1662199712 is an apocalyptic number.

It is an amenable number.

1662199712 is a deficient number, since it is larger than the sum of its proper divisors (1610256034).

1662199712 is an equidigital number, since it uses as much as digits as its factorization.

1662199712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51943751 (or 51943743 counting only the distinct ones).

The product of its digits is 81648, while the sum is 44.

The square root of 1662199712 is about 40770.0835417344. The cubic root of 1662199712 is about 1184.5709217004.

The spelling of 1662199712 in words is "one billion, six hundred sixty-two million, one hundred ninety-nine thousand, seven hundred twelve".