161230166 has 4 divisors (see below), whose sum is σ = 241845252. Its totient is φ = 80615082.

The previous prime is 161230151. The next prime is 161230211. The reversal of 161230166 is 661032161.

161230166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40307540 + ... + 40307543.

It is an arithmetic number, because the mean of its divisors is an integer number (60461313).

Almost surely, 2^161230166 is an apocalyptic number.

161230166 is a deficient number, since it is larger than the sum of its proper divisors (80615086).

161230166 is an equidigital number, since it uses as much as digits as its factorization.

161230166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80615085.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 161230166 is about 12697.6441121966. The cubic root of 161230166 is about 544.2712994918.

The spelling of 161230166 in words is "one hundred sixty-one million, two hundred thirty thousand, one hundred sixty-six".