1616866168 has 16 divisors (see below), whose sum is σ = 3032255160. Its totient is φ = 808264800.

The previous prime is 1616866159. The next prime is 1616866171. The reversal of 1616866168 is 8616686161.

It is a super-2 number, since 2×1616866168² = 5228512410446008448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25978 + ... + 62518.

Almost surely, 2^1616866168 is an apocalyptic number.

It is an amenable number.

1616866168 is a deficient number, since it is larger than the sum of its proper divisors (1415388992).

1616866168 is a wasteful number, since it uses less digits than its factorization.

1616866168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42078 (or 42074 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 1616866168 is about 40210.2744084146. The cubic root of 1616866168 is about 1173.7024863619.

The spelling of 1616866168 in words is "one billion, six hundred sixteen million, eight hundred sixty-six thousand, one hundred sixty-eight".