1603532172 has 144 divisors (see below), whose sum is σ = 4266452736. Its totient is φ = 468124800.

The previous prime is 1603532171. The next prime is 1603532173. The reversal of 1603532172 is 2712353061.

It is an interprime number because it is at equal distance from previous prime (1603532171) and next prime (1603532173).

It is not an unprimeable number, because it can be changed into a prime (1603532171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5155897 + ... + 5156207.

It is an arithmetic number, because the mean of its divisors is an integer number (29628144).

Almost surely, 2^1603532172 is an apocalyptic number.

1603532172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1603532172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2133226368).

1603532172 is an abundant number, since it is smaller than the sum of its proper divisors (2662920564).

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

1603532172 is a wasteful number, since it uses less digits than its factorization.

1603532172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 1603532172 is about 40044.1278092057. The cubic root of 1603532172 is about 1170.4671405131.

The spelling of 1603532172 in words is "one billion, six hundred three million, five hundred thirty-two thousand, one hundred seventy-two".