1660161166 has 32 divisors (see below), whose sum is σ = 2645913600. Its totient is φ = 780031200.

The previous prime is 1660161161. The next prime is 1660161179. The reversal of 1660161166 is 6611610661.

It is a super-2 number, since 2×1660161166² = 5512270194188959112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660161161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379560 + ... + 383908.

It is an arithmetic number, because the mean of its divisors is an integer number (82684800).

Almost surely, 2^1660161166 is an apocalyptic number.

1660161166 is a deficient number, since it is larger than the sum of its proper divisors (985752434).

1660161166 is a wasteful number, since it uses less digits than its factorization.

1660161166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1660161166 is about 40745.0753588701. The cubic root of 1660161166 is about 1184.0864652394.

The spelling of 1660161166 in words is "one billion, six hundred sixty million, one hundred sixty-one thousand, one hundred sixty-six".