1660000161 has 8 divisors (see below), whose sum is σ = 2222999680. Its totient is φ = 1101833712.

The previous prime is 1660000159. The next prime is 1660000163. The reversal of 1660000161 is 1610000661.

It is an interprime number because it is at equal distance from previous prime (1660000159) and next prime (1660000163).

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

It is not a de Polignac number, because 1660000161 - 2¹ = 1660000159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1660000163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207465 + ... + 1208838.

It is an arithmetic number, because the mean of its divisors is an integer number (277874960).

Almost surely, 2^1660000161 is an apocalyptic number.

It is an amenable number.

1660000161 is a deficient number, since it is larger than the sum of its proper divisors (562999519).

1660000161 is a wasteful number, since it uses less digits than its factorization.

1660000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416535.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1660000161 is about 40743.0995507215. The cubic root of 1660000161 is about 1184.0481858224.

The spelling of 1660000161 in words is "one billion, six hundred sixty million, one hundred sixty-one", and thus it is an aban number.