5491941840 has 960 divisors, whose sum is σ = 24735559680. Its totient is φ = 1058365440.

The previous prime is 5491941839. The next prime is 5491941881. The reversal of 5491941840 is 481491945.

It is a happy number.

5491941840 is a `hidden beast` number, since 549 + 1 + 94 + 18 + 4 + 0 = 666.

It is a super-2 number, since 2×5491941840² = 60322850347885171200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 75232044 + ... + 75232116.

It is an arithmetic number, because the mean of its divisors is an integer number (25766208).

Almost surely, 2^5491941840 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 5491941840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12367779840).

5491941840 is an abundant number, since it is smaller than the sum of its proper divisors (19243617840).

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

5491941840 is a wasteful number, since it uses less digits than its factorization.

5491941840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 5491941840 is about 74107.6368534310. The cubic root of 5491941840 is about 1764.3116823188.

The spelling of 5491941840 in words is "five billion, four hundred ninety-one million, nine hundred forty-one thousand, eight hundred forty".