1665043532 has 24 divisors (see below), whose sum is σ = 2968686336. Its totient is φ = 816943248.

The previous prime is 1665043519. The next prime is 1665043553. The reversal of 1665043532 is 2353405661.

It is a junction number, because it is equal to n+sod(n) for n = 1665043492 and 1665043501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58673 + ... + 82295.

It is an arithmetic number, because the mean of its divisors is an integer number (123695264).

Almost surely, 2^1665043532 is an apocalyptic number.

It is an amenable number.

1665043532 is a deficient number, since it is larger than the sum of its proper divisors (1303642804).

1665043532 is a wasteful number, since it uses less digits than its factorization.

1665043532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23957 (or 23955 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 1665043532 is about 40804.9449454352. The cubic root of 1665043532 is about 1185.2460886956.

The spelling of 1665043532 in words is "one billion, six hundred sixty-five million, forty-three thousand, five hundred thirty-two".