1665532752 has 40 divisors (see below), whose sum is σ = 4633599264. Its totient is φ = 512471424.

The previous prime is 1665532733. The next prime is 1665532807. The reversal of 1665532752 is 2572355661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1333938 + ... + 1335185.

Almost surely, 2^1665532752 is an apocalyptic number.

1665532752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1665532752 is an abundant number, since it is smaller than the sum of its proper divisors (2968066512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1665532752 is a wasteful number, since it uses less digits than its factorization.

1665532752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669147 (or 2669141 counting only the distinct ones).

The product of its digits is 378000, while the sum is 42.

The square root of 1665532752 is about 40810.9391217600. The cubic root of 1665532752 is about 1185.3621595970.

The spelling of 1665532752 in words is "one billion, six hundred sixty-five million, five hundred thirty-two thousand, seven hundred fifty-two".