166035161 has 4 divisors (see below), whose sum is σ = 169567872. Its totient is φ = 162502452.

The previous prime is 166035131. The next prime is 166035173. The reversal of 166035161 is 161530661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161530661 = 43 ⋅3756527.

It is a cyclic number.

It is not a de Polignac number, because 166035161 - 2⁶ = 166035097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166035131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766285 + ... + 1766378.

It is an arithmetic number, because the mean of its divisors is an integer number (42391968).

Almost surely, 2^166035161 is an apocalyptic number.

It is an amenable number.

166035161 is a deficient number, since it is larger than the sum of its proper divisors (3532711).

166035161 is an equidigital number, since it uses as much as digits as its factorization.

166035161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532710.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 166035161 is about 12885.4631659091. The cubic root of 166035161 is about 549.6252665025.

The spelling of 166035161 in words is "one hundred sixty-six million, thirty-five thousand, one hundred sixty-one".