1603265216 has 28 divisors (see below), whose sum is σ = 3635977488. Its totient is φ = 687113472.

The previous prime is 1603265207. The next prime is 1603265219. The reversal of 1603265216 is 6125623061.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1603265219) 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, 1788911 + ... + 1789806.

Almost surely, 2^1603265216 is an apocalyptic number.

1603265216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1603265216 is an abundant number, since it is smaller than the sum of its proper divisors (2032712272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1603265216 is an equidigital number, since it uses as much as digits as its factorization.

1603265216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3578736 (or 3578726 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1603265216 is about 40040.7943977139. The cubic root of 1603265216 is about 1170.4021837938.

Adding to 1603265216 its reverse (6125623061), we get a palindrome (7728888277).

The spelling of 1603265216 in words is "one billion, six hundred three million, two hundred sixty-five thousand, two hundred sixteen".