165162403 has 4 divisors (see below), whose sum is σ = 188757040. Its totient is φ = 141567768.

The previous prime is 165162367. The next prime is 165162419. The reversal of 165162403 is 304261561.

165162403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304261561 = 7477 ⋅40693.

It is a cyclic number.

It is not a de Polignac number, because 165162403 - 2⁹ = 165161891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165162433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11797308 + ... + 11797321.

It is an arithmetic number, because the mean of its divisors is an integer number (47189260).

Almost surely, 2^165162403 is an apocalyptic number.

165162403 is a deficient number, since it is larger than the sum of its proper divisors (23594637).

165162403 is an equidigital number, since it uses as much as digits as its factorization.

165162403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23594636.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 165162403 is about 12851.5525521238. The cubic root of 165162403 is about 548.6605455372.

The spelling of 165162403 in words is "one hundred sixty-five million, one hundred sixty-two thousand, four hundred three".