5198538664 has 128 divisors (see below), whose sum is σ = 11605524480. Its totient is φ = 2156313600.

The previous prime is 5198538641. The next prime is 5198538677. The reversal of 5198538664 is 4668358915.

It is a super-2 number, since 2×5198538664² = 54049608482205809792, which contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13573017 + ... + 13573399.

It is an arithmetic number, because the mean of its divisors is an integer number (90668160).

Almost surely, 2^5198538664 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 5198538664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5802762240).

5198538664 is an abundant number, since it is smaller than the sum of its proper divisors (6406985816).

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

5198538664 is a wasteful number, since it uses less digits than its factorization.

5198538664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 667 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 55.

The square root of 5198538664 is about 72100.8922552280. The cubic root of 5198538664 is about 1732.3159049141.

The spelling of 5198538664 in words is "five billion, one hundred ninety-eight million, five hundred thirty-eight thousand, six hundred sixty-four".