5193215981 has 16 divisors (see below), whose sum is σ = 5539807728. Its totient is φ = 4851302400.

The previous prime is 5193215957. The next prime is 5193216031. The reversal of 5193215981 is 1895123915.

It can be written as a sum of positive squares in 8 ways, for example, as 105247081 + 5087968900 = 10259^2 + 71330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5193215981 is a prime.

It is a super-2 number, since 2×5193215981² = 53938984450627584722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5193215081) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1971041 + ... + 1973673.

It is an arithmetic number, because the mean of its divisors is an integer number (346237983).

Almost surely, 2^5193215981 is an apocalyptic number.

It is an amenable number.

5193215981 is a deficient number, since it is larger than the sum of its proper divisors (346591747).

5193215981 is a wasteful number, since it uses less digits than its factorization.

5193215981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472.

The product of its digits is 97200, while the sum is 44.

The square root of 5193215981 is about 72063.9714489841. The cubic root of 5193215981 is about 1731.7244747882.

The spelling of 5193215981 in words is "five billion, one hundred ninety-three million, two hundred fifteen thousand, nine hundred eighty-one".