516949191 has 12 divisors (see below), whose sum is σ = 814586760. Its totient is φ = 313302480.

The previous prime is 516949189. The next prime is 516949217. The reversal of 516949191 is 191949615.

516949191 is a `hidden beast` number, since 516 + 9 + 49 + 1 + 91 = 666.

It is not a de Polignac number, because 516949191 - 2¹ = 516949189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516949151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2610756 + ... + 2610953.

It is an arithmetic number, because the mean of its divisors is an integer number (67882230).

Almost surely, 2^516949191 is an apocalyptic number.

516949191 is a deficient number, since it is larger than the sum of its proper divisors (297637569).

516949191 is a wasteful number, since it uses less digits than its factorization.

516949191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221726 (or 5221723 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 516949191 is about 22736.5166857195. The cubic root of 516949191 is about 802.5694422687.

The spelling of 516949191 in words is "five hundred sixteen million, nine hundred forty-nine thousand, one hundred ninety-one".