1603581696 has 54 divisors (see below), whose sum is σ = 4623528000. Its totient is φ = 534526464.

The previous prime is 1603581691. The next prime is 1603581713. The reversal of 1603581696 is 6961853061.

1603581696 is a `hidden beast` number, since 1 + 6 + 0 + 3 + 581 + 69 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603581691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345696 + ... + 350303.

Almost surely, 2^1603581696 is an apocalyptic number.

1603581696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1603581696 is an abundant number, since it is smaller than the sum of its proper divisors (3019946304).

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

1603581696 is an equidigital number, since it uses as much as digits as its factorization.

1603581696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696021 (or 696004 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1603581696 is about 40044.7461722509. The cubic root of 1603581696 is about 1170.4791900827.

The spelling of 1603581696 in words is "one billion, six hundred three million, five hundred eighty-one thousand, six hundred ninety-six".