1665715532 has 48 divisors (see below), whose sum is σ = 3258874752. Its totient is φ = 740033280.

The previous prime is 1665715523. The next prime is 1665715589. The reversal of 1665715532 is 2355175661.

It is a self number, because there is not a number n which added to its sum of digits gives 1665715532.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143498 + ... + 154670.

It is an arithmetic number, because the mean of its divisors is an integer number (67893224).

Almost surely, 2^1665715532 is an apocalyptic number.

It is an amenable number.

1665715532 is a deficient number, since it is larger than the sum of its proper divisors (1593159220).

1665715532 is a wasteful number, since it uses less digits than its factorization.

1665715532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11298 (or 11296 counting only the distinct ones).

The product of its digits is 189000, while the sum is 41.

The square root of 1665715532 is about 40813.1784109006. The cubic root of 1665715532 is about 1185.4055196110.

The spelling of 1665715532 in words is "one billion, six hundred sixty-five million, seven hundred fifteen thousand, five hundred thirty-two".