1016615887 has 6 divisors (see below), whose sum is σ = 1182594048. Its totient is φ = 871385004.

The previous prime is 1016615879. The next prime is 1016615903. The reversal of 1016615887 is 7885166101.

It is not a de Polignac number, because 1016615887 - 2³ = 1016615879 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 (1016615807) 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 in 5 ways as a sum of consecutive naturals, for example, 10373583 + ... + 10373680.

It is an arithmetic number, because the mean of its divisors is an integer number (197099008).

Almost surely, 2^1016615887 is an apocalyptic number.

1016615887 is a deficient number, since it is larger than the sum of its proper divisors (165978161).

1016615887 is an equidigital number, since it uses as much as digits as its factorization.

1016615887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20747277 (or 20747270 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1016615887 is about 31884.4144841959. The cubic root of 1016615887 is about 1005.5082326652.

The spelling of 1016615887 in words is "one billion, sixteen million, six hundred fifteen thousand, eight hundred eighty-seven".