165903316 has 12 divisors (see below), whose sum is σ = 300342420. Its totient is φ = 80091200.

The previous prime is 165903277. The next prime is 165903317. The reversal of 165903316 is 613309561.

165903316 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 74891716 + 91011600 = 8654^2 + 9540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165903317) 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, 714985 + ... + 715216.

It is an arithmetic number, because the mean of its divisors is an integer number (25028535).

Almost surely, 2^165903316 is an apocalyptic number.

It is an amenable number.

165903316 is a deficient number, since it is larger than the sum of its proper divisors (134439104).

165903316 is a wasteful number, since it uses less digits than its factorization.

165903316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430234 (or 1430232 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 165903316 is about 12880.3461133620. The cubic root of 165903316 is about 549.4797460550.

The spelling of 165903316 in words is "one hundred sixty-five million, nine hundred three thousand, three hundred sixteen".