165382440 has 32 divisors (see below), whose sum is σ = 496147680. Its totient is φ = 44101952.

The previous prime is 165382423. The next prime is 165382463. The reversal of 165382440 is 44283561.

165382440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 688974 + ... + 689213.

It is an arithmetic number, because the mean of its divisors is an integer number (15504615).

Almost surely, 2^165382440 is an apocalyptic number.

165382440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165382440 is an abundant number, since it is smaller than the sum of its proper divisors (330765240).

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

165382440 is a wasteful number, since it uses less digits than its factorization.

165382440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378201 (or 1378197 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 165382440 is about 12860.1104194326. The cubic root of 165382440 is about 548.9040877434.

The spelling of 165382440 in words is "one hundred sixty-five million, three hundred eighty-two thousand, four hundred forty".