1016615491 has 2 divisors, whose sum is σ = 1016615492. Its totient is φ = 1016615490.

The previous prime is 1016615477. The next prime is 1016615497. The reversal of 1016615491 is 1945166101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1016615491 - 2⁹ = 1016614979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1016615497) 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 as a sum of consecutive naturals, namely, 508307745 + 508307746.

It is an arithmetic number, because the mean of its divisors is an integer number (508307746).

Almost surely, 2^1016615491 is an apocalyptic number.

1016615491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1016615491 is an equidigital number, since it uses as much as digits as its factorization.

1016615491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1016615491 is about 31884.4082742647. The cubic root of 1016615491 is about 1005.5081021074.

The spelling of 1016615491 in words is "one billion, sixteen million, six hundred fifteen thousand, four hundred ninety-one".