165378016 has 24 divisors (see below), whose sum is σ = 328950720. Its totient is φ = 81835008.

The previous prime is 165378013. The next prime is 165378019. The reversal of 165378016 is 610873561.

It is an interprime number because it is at equal distance from previous prime (165378013) and next prime (165378019).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165378011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23536 + ... + 29743.

It is an arithmetic number, because the mean of its divisors is an integer number (13706280).

Almost surely, 2^165378016 is an apocalyptic number.

165378016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165378016 is a deficient number, since it is larger than the sum of its proper divisors (163572704).

165378016 is an equidigital number, since it uses as much as digits as its factorization.

165378016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53386 (or 53378 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 165378016 is about 12859.9384135384. The cubic root of 165378016 is about 548.8991932832.

It can be divided in two parts, 1653780 and 16, that added together give a square (1653796 = 1286²).

The spelling of 165378016 in words is "one hundred sixty-five million, three hundred seventy-eight thousand, sixteen".