1665533146 has 8 divisors (see below), whose sum is σ = 2645258580. Its totient is φ = 783780288.

The previous prime is 1665533131. The next prime is 1665533159. The reversal of 1665533146 is 6413355661.

It can be written as a sum of positive squares in 2 ways, for example, as 1307907225 + 357625921 = 36165^2 + 18911^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1665533099 and 1665533108.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24493101 + ... + 24493168.

Almost surely, 2^1665533146 is an apocalyptic number.

1665533146 is a deficient number, since it is larger than the sum of its proper divisors (979725434).

1665533146 is a wasteful number, since it uses less digits than its factorization.

1665533146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48986288.

The product of its digits is 194400, while the sum is 40.

The square root of 1665533146 is about 40810.9439488968. The cubic root of 1665533146 is about 1185.3622530671.

The spelling of 1665533146 in words is "one billion, six hundred sixty-five million, five hundred thirty-three thousand, one hundred forty-six".