1660471243 has 8 divisors (see below), whose sum is σ = 1771569360. Its totient is φ = 1550864640.

The previous prime is 1660471231. The next prime is 1660471247. The reversal of 1660471243 is 3421740661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1660471243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1660471199 and 1660471208.

It is not an unprimeable number, because it can be changed into a prime (1660471247) 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, 370578 + ... + 375031.

It is an arithmetic number, because the mean of its divisors is an integer number (221446170).

Almost surely, 2^1660471243 is an apocalyptic number.

1660471243 is a deficient number, since it is larger than the sum of its proper divisors (111098117).

1660471243 is a wasteful number, since it uses less digits than its factorization.

1660471243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745757.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1660471243 is about 40748.8802668245. The cubic root of 1660471243 is about 1184.1601799947.

The spelling of 1660471243 in words is "one billion, six hundred sixty million, four hundred seventy-one thousand, two hundred forty-three".