1662081682 has 8 divisors (see below), whose sum is σ = 2494005552. Its totient is φ = 830746500.

The previous prime is 1662081661. The next prime is 1662081689. The reversal of 1662081682 is 2861802661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1662081689) by changing a digit.

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, 140044 + ... + 151447.

It is an arithmetic number, because the mean of its divisors is an integer number (311750694).

Almost surely, 2^1662081682 is an apocalyptic number.

1662081682 is a deficient number, since it is larger than the sum of its proper divisors (831923870).

1662081682 is a wasteful number, since it uses less digits than its factorization.

1662081682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294344.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1662081682 is about 40768.6360085789. The cubic root of 1662081682 is about 1184.5428829086.

The spelling of 1662081682 in words is "one billion, six hundred sixty-two million, eighty-one thousand, six hundred eighty-two".