1603040465 has 16 divisors (see below), whose sum is σ = 2072580048. Its totient is φ = 1183236096.

The previous prime is 1603040389. The next prime is 1603040477. The reversal of 1603040465 is 5640403061.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 46185616 + 1556854849 = 6796^2 + 39457^2 .

It is a cyclic number.

It is not a de Polignac number, because 1603040465 - 2³⁰ = 529298641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 184049 + ... + 192561.

It is an arithmetic number, because the mean of its divisors is an integer number (129536253).

Almost surely, 2^1603040465 is an apocalyptic number.

It is an amenable number.

1603040465 is a deficient number, since it is larger than the sum of its proper divisors (469539583).

1603040465 is a wasteful number, since it uses less digits than its factorization.

1603040465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1603040465 is about 40037.9877741127. The cubic root of 1603040465 is about 1170.3474909601.

The spelling of 1603040465 in words is "one billion, six hundred three million, forty thousand, four hundred sixty-five".