5198561181 has 16 divisors (see below), whose sum is σ = 8401715520. Its totient is φ = 3150642960.

The previous prime is 5198561129. The next prime is 5198561197. The reversal of 5198561181 is 1811658915.

5198561181 is a `hidden beast` number, since 5 + 1 + 9 + 8 + 561 + 1 + 81 = 666.

It is not a de Polignac number, because 5198561181 - 2¹¹ = 5198559133 is a prime.

It is a super-2 number, since 2×5198561181² = 54050076705200229522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5198561281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8751490 + ... + 8752083.

It is an arithmetic number, because the mean of its divisors is an integer number (525107220).

Almost surely, 2^5198561181 is an apocalyptic number.

It is an amenable number.

5198561181 is a deficient number, since it is larger than the sum of its proper divisors (3203154339).

5198561181 is a wasteful number, since it uses less digits than its factorization.

5198561181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17503593 (or 17503587 counting only the distinct ones).

The product of its digits is 86400, while the sum is 45.

The square root of 5198561181 is about 72101.0484043055. The cubic root of 5198561181 is about 1732.3184060337.

The spelling of 5198561181 in words is "five billion, one hundred ninety-eight million, five hundred sixty-one thousand, one hundred eighty-one".