1660473349 has 8 divisors (see below), whose sum is σ = 1682033472. Its totient is φ = 1638950400.

The previous prime is 1660473307. The next prime is 1660473359. The reversal of 1660473349 is 9433740661.

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-1660473349 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 (1660473359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87024 + ... + 104374.

It is an arithmetic number, because the mean of its divisors is an integer number (210254184).

Almost surely, 2^1660473349 is an apocalyptic number.

It is an amenable number.

1660473349 is a deficient number, since it is larger than the sum of its proper divisors (21560123).

1660473349 is a wasteful number, since it uses less digits than its factorization.

1660473349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18587.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 1660473349 is about 40748.9061080172. The cubic root of 1660473349 is about 1184.1606806237.

The spelling of 1660473349 in words is "one billion, six hundred sixty million, four hundred seventy-three thousand, three hundred forty-nine".