5349521820 has 216 divisors, whose sum is σ = 16398465552. Its totient is φ = 1302773760.

The previous prime is 5349521791. The next prime is 5349521831. The reversal of 5349521820 is 281259435.

It is a super-2 number, since 2×5349521820² = 57234767405312224800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20815132 + ... + 20815388.

It is an arithmetic number, because the mean of its divisors is an integer number (75918822).

Almost surely, 2^5349521820 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 5349521820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8199232776).

5349521820 is an abundant number, since it is smaller than the sum of its proper divisors (11048943732).

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

5349521820 is a wasteful number, since it uses less digits than its factorization.

5349521820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 5349521820 is about 73140.4253474096. The cubic root of 5349521820 is about 1748.9268871278.

The spelling of 5349521820 in words is "five billion, three hundred forty-nine million, five hundred twenty-one thousand, eight hundred twenty".