1660142893 has 8 divisors (see below), whose sum is σ = 1681948800. Its totient is φ = 1638356928.

The previous prime is 1660142881. The next prime is 1660142909. The reversal of 1660142893 is 3982410661.

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

It is a cyclic number.

It is not a de Polignac number, because 1660142893 - 2¹³ = 1660134701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660142833) 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 in 7 ways as a sum of consecutive naturals, for example, 240630 + ... + 247432.

It is an arithmetic number, because the mean of its divisors is an integer number (210243600).

Almost surely, 2^1660142893 is an apocalyptic number.

It is an amenable number.

1660142893 is a deficient number, since it is larger than the sum of its proper divisors (21805907).

1660142893 is an equidigital number, since it uses as much as digits as its factorization.

1660142893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1660142893 is about 40744.8511225652. The cubic root of 1660142893 is about 1184.0821209038.

The spelling of 1660142893 in words is "one billion, six hundred sixty million, one hundred forty-two thousand, eight hundred ninety-three".