1660200243 has 8 divisors (see below), whose sum is σ = 2383877328. Its totient is φ = 1021661664.

The previous prime is 1660200197. The next prime is 1660200251. The reversal of 1660200243 is 3420020661.

1660200243 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1660200243 - 2⁸ = 1660199987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1660200343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21284580 + ... + 21284657.

It is an arithmetic number, because the mean of its divisors is an integer number (297984666).

Almost surely, 2^1660200243 is an apocalyptic number.

1660200243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1660200243 is a deficient number, since it is larger than the sum of its proper divisors (723677085).

1660200243 is a wasteful number, since it uses less digits than its factorization.

1660200243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42569253.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1660200243 is about 40745.5548863922. The cubic root of 1660200243 is about 1184.0957555389.

The spelling of 1660200243 in words is "one billion, six hundred sixty million, two hundred thousand, two hundred forty-three".