5491601920 has 240 divisors, whose sum is σ = 15965674560. Its totient is φ = 1769693184.

The previous prime is 5491601903. The next prime is 5491601963. The reversal of 5491601920 is 291061945.

It is a self number, because there is not a number n which added to its sum of digits gives 5491601920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43240897 + ... + 43241023.

It is an arithmetic number, because the mean of its divisors is an integer number (66523644).

Almost surely, 2^5491601920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5491601920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7982837280).

5491601920 is an abundant number, since it is smaller than the sum of its proper divisors (10474072640).

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

5491601920 is an equidigital number, since it uses as much as digits as its factorization.

5491601920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 5491601920 is about 74105.3433970857. The cubic root of 5491601920 is about 1764.2752812777.

The spelling of 5491601920 in words is "five billion, four hundred ninety-one million, six hundred one thousand, nine hundred twenty".