1660533243 has 8 divisors (see below), whose sum is σ = 2290390800. Its totient is φ = 1068848928.

The previous prime is 1660533239. The next prime is 1660533269. The reversal of 1660533243 is 3423350661.

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

It is not a de Polignac number, because 1660533243 - 2² = 1660533239 is a prime.

It is a super-2 number, since 2×1660533243² = 5514741302216194098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1660532243) 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, 9543208 + ... + 9543381.

It is an arithmetic number, because the mean of its divisors is an integer number (286298850).

Almost surely, 2^1660533243 is an apocalyptic number.

1660533243 is a deficient number, since it is larger than the sum of its proper divisors (629857557).

1660533243 is a wasteful number, since it uses less digits than its factorization.

1660533243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19086621.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 1660533243 is about 40749.6410168237. The cubic root of 1660533243 is about 1184.1749181838.

The spelling of 1660533243 in words is "one billion, six hundred sixty million, five hundred thirty-three thousand, two hundred forty-three".