1662143308 has 18 divisors (see below), whose sum is σ = 3383649276. Its totient is φ = 712347048.

The previous prime is 1662143291. The next prime is 1662143317. The reversal of 1662143308 is 8033412661.

It is a happy 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 5 ways as a sum of consecutive naturals, for example, 4239966 + ... + 4240357.

Almost surely, 2^1662143308 is an apocalyptic number.

It is an amenable number.

1662143308 is an abundant number, since it is smaller than the sum of its proper divisors (1721505968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1662143308 is a wasteful number, since it uses less digits than its factorization.

1662143308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480341 (or 8480332 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1662143308 is about 40769.3918031653. The cubic root of 1662143308 is about 1184.5575227301.

Adding to 1662143308 its reverse (8033412661), we get a palindrome (9695555969).

The spelling of 1662143308 in words is "one billion, six hundred sixty-two million, one hundred forty-three thousand, three hundred eight".