1603613880 has 192 divisors, whose sum is σ = 5869393920. Its totient is φ = 376185600.

The previous prime is 1603613831. The next prime is 1603613897. The reversal of 1603613880 is 883163061.

It is a super-2 number, since 2×1603613880² = 5143154952257308800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 116229 + ... + 129291.

It is an arithmetic number, because the mean of its divisors is an integer number (30569760).

Almost surely, 2^1603613880 is an apocalyptic number.

1603613880 is a gapful number since it is divisible by the number (10) 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 1603613880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2934696960).

1603613880 is an abundant number, since it is smaller than the sum of its proper divisors (4265780040).

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

1603613880 is a wasteful number, since it uses less digits than its factorization.

1603613880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122 (or 13115 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1603613880 is about 40045.1480207028. The cubic root of 1603613880 is about 1170.4870205642.

The spelling of 1603613880 in words is "one billion, six hundred three million, six hundred thirteen thousand, eight hundred eighty".