1616166161 has 8 divisors (see below), whose sum is σ = 1646144544. Its totient is φ = 1586360160.

The previous prime is 1616166157. The next prime is 1616166169. The reversal of 1616166161 is 1616616161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1616166161 - 2² = 1616166157 is a prime.

It is a super-2 number, since 2×1616166161² = 5223986119922955842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616166169) 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 in 7 ways as a sum of consecutive naturals, for example, 24095 + ... + 61748.

It is an arithmetic number, because the mean of its divisors is an integer number (205768068).

Almost surely, 2^1616166161 is an apocalyptic number.

It is an amenable number.

1616166161 is a deficient number, since it is larger than the sum of its proper divisors (29978383).

1616166161 is an equidigital number, since it uses as much as digits as its factorization.

1616166161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86191.

The product of its digits is 7776, while the sum is 35.

The square root of 1616166161 is about 40201.5691360424. The cubic root of 1616166161 is about 1173.5330807613.

The spelling of 1616166161 in words is "one billion, six hundred sixteen million, one hundred sixty-six thousand, one hundred sixty-one".