1516516091 has 2 divisors, whose sum is σ = 1516516092. Its totient is φ = 1516516090.

The previous prime is 1516516081. The next prime is 1516516163. The reversal of 1516516091 is 1906156151.

It is a weak prime.

It is an emirp because it is prime and its reverse (1906156151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1516516091 - 2¹⁴ = 1516499707 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1516516081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758258045 + 758258046.

It is an arithmetic number, because the mean of its divisors is an integer number (758258046).

Almost surely, 2^1516516091 is an apocalyptic number.

1516516091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516516091 is an equidigital number, since it uses as much as digits as its factorization.

1516516091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 35.

The square root of 1516516091 is about 38942.4715574140. The cubic root of 1516516091 is about 1148.9002949132.

The spelling of 1516516091 in words is "one billion, five hundred sixteen million, five hundred sixteen thousand, ninety-one".