1516257079 has 2 divisors, whose sum is σ = 1516257080. Its totient is φ = 1516257078.

The previous prime is 1516257073. The next prime is 1516257097. The reversal of 1516257079 is 9707526151.

Together with next prime (1516257097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1516257079 - 2¹¹ = 1516255031 is a prime.

It is a super-2 number, since 2×1516257079² = 4598071059235224482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1516257073) 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, 758128539 + 758128540.

It is an arithmetic number, because the mean of its divisors is an integer number (758128540).

Almost surely, 2^1516257079 is an apocalyptic number.

1516257079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516257079 is an equidigital number, since it uses as much as digits as its factorization.

1516257079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 43.

The square root of 1516257079 is about 38939.1458432257. The cubic root of 1516257079 is about 1148.8348827253.

The spelling of 1516257079 in words is "one billion, five hundred sixteen million, two hundred fifty-seven thousand, seventy-nine".