5181650965 has 4 divisors (see below), whose sum is σ = 6217981164. Its totient is φ = 4145320768.

The previous prime is 5181650963. The next prime is 5181650989. The reversal of 5181650965 is 5690561815.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4135904721 + 1045746244 = 64311^2 + 32338^2 .

It is a cyclic number.

It is not a de Polignac number, because 5181650965 - 2¹ = 5181650963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181650963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518165092 + ... + 518165101.

It is an arithmetic number, because the mean of its divisors is an integer number (1554495291).

Almost surely, 2^5181650965 is an apocalyptic number.

It is an amenable number.

5181650965 is a deficient number, since it is larger than the sum of its proper divisors (1036330199).

5181650965 is a wasteful number, since it uses less digits than its factorization.

5181650965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036330198.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 5181650965 is about 71983.6854085702. The cubic root of 5181650965 is about 1730.4380332447.

The spelling of 5181650965 in words is "five billion, one hundred eighty-one million, six hundred fifty thousand, nine hundred sixty-five".