1662143066 has 16 divisors (see below), whose sum is σ = 2625264000. Its totient is φ = 787082688.

The previous prime is 1662143003. The next prime is 1662143069. The reversal of 1662143066 is 6603412661.

It is not an unprimeable number, because it can be changed into a prime (1662143069) 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 7 ways as a sum of consecutive naturals, for example, 183410 + ... + 192258.

It is an arithmetic number, because the mean of its divisors is an integer number (164079000).

Almost surely, 2^1662143066 is an apocalyptic number.

1662143066 is a deficient number, since it is larger than the sum of its proper divisors (963120934).

1662143066 is a wasteful number, since it uses less digits than its factorization.

1662143066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13813.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 1662143066 is about 40769.3888352524. The cubic root of 1662143066 is about 1184.5574652415.

The spelling of 1662143066 in words is "one billion, six hundred sixty-two million, one hundred forty-three thousand, sixty-six".