165413603 has 2 divisors, whose sum is σ = 165413604. Its totient is φ = 165413602.

The previous prime is 165413543. The next prime is 165413627. The reversal of 165413603 is 306314561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165413603 - 2¹⁰ = 165412579 is a prime.

It is not a weakly prime, because it can be changed into another prime (165413683) by changing a digit.

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 as a sum of consecutive naturals, namely, 82706801 + 82706802.

It is an arithmetic number, because the mean of its divisors is an integer number (82706802).

Almost surely, 2^165413603 is an apocalyptic number.

165413603 is a deficient number, since it is larger than the sum of its proper divisors (1).

165413603 is an equidigital number, since it uses as much as digits as its factorization.

165413603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 165413603 is about 12861.3219771530. The cubic root of 165413603 is about 548.9385622294.

The spelling of 165413603 in words is "one hundred sixty-five million, four hundred thirteen thousand, six hundred three".