1660142933 has 2 divisors, whose sum is σ = 1660142934. Its totient is φ = 1660142932.

The previous prime is 1660142929. The next prime is 1660142971. The reversal of 1660142933 is 3392410661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207006564 + 453136369 = 34742^2 + 21287^2 .

It is an emirp because it is prime and its reverse (3392410661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1660142933 - 2² = 1660142929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1660142893 and 1660142902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660142983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830071466 + 830071467.

It is an arithmetic number, because the mean of its divisors is an integer number (830071467).

Almost surely, 2^1660142933 is an apocalyptic number.

It is an amenable number.

1660142933 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660142933 is an equidigital number, since it uses as much as digits as its factorization.

1660142933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1660142933 is about 40744.8516134247. The cubic root of 1660142933 is about 1184.0821304137.

The spelling of 1660142933 in words is "one billion, six hundred sixty million, one hundred forty-two thousand, nine hundred thirty-three".