165146503 has 8 divisors (see below), whose sum is σ = 175459680. Its totient is φ = 155141280.

The previous prime is 165146453. The next prime is 165146507. The reversal of 165146503 is 305641561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165146503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165146507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75883 + ... + 78028.

It is an arithmetic number, because the mean of its divisors is an integer number (21932460).

Almost surely, 2^165146503 is an apocalyptic number.

165146503 is a deficient number, since it is larger than the sum of its proper divisors (10313177).

165146503 is a wasteful number, since it uses less digits than its factorization.

165146503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153977.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 165146503 is about 12850.9339349325. The cubic root of 165146503 is about 548.6429386597.

It can be divided in two parts, 165146 and 503, that added together give a square (165649 = 407²).

The spelling of 165146503 in words is "one hundred sixty-five million, one hundred forty-six thousand, five hundred three".