1662143156 has 48 divisors (see below), whose sum is σ = 3122439936. Its totient is φ = 772861824.

The previous prime is 1662143141. The next prime is 1662143167. The reversal of 1662143156 is 6513412661.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 296330 + ... + 301886.

It is an arithmetic number, because the mean of its divisors is an integer number (65050832).

Almost surely, 2^1662143156 is an apocalyptic number.

It is an amenable number.

1662143156 is a deficient number, since it is larger than the sum of its proper divisors (1460296780).

1662143156 is a wasteful number, since it uses less digits than its factorization.

1662143156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688 (or 5686 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 1662143156 is about 40769.3899390217. The cubic root of 1662143156 is about 1184.5574866215.

The spelling of 1662143156 in words is "one billion, six hundred sixty-two million, one hundred forty-three thousand, one hundred fifty-six".