5181970161 has 8 divisors (see below), whose sum is σ = 6996753280. Its totient is φ = 3410916912.

The previous prime is 5181970151. The next prime is 5181970163. The reversal of 5181970161 is 1610791815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5181970161 - 2⁹ = 5181969649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5181970163) 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 7 ways as a sum of consecutive naturals, for example, 10932190 + ... + 10932663.

It is an arithmetic number, because the mean of its divisors is an integer number (874594160).

Almost surely, 2^5181970161 is an apocalyptic number.

It is an amenable number.

5181970161 is a deficient number, since it is larger than the sum of its proper divisors (1814783119).

5181970161 is a wasteful number, since it uses less digits than its factorization.

5181970161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21864935.

The product of its (nonzero) digits is 15120, while the sum is 39.

The square root of 5181970161 is about 71985.9025157009. The cubic root of 5181970161 is about 1730.4735648775.

The spelling of 5181970161 in words is "five billion, one hundred eighty-one million, nine hundred seventy thousand, one hundred sixty-one".