161205167 has 2 divisors, whose sum is σ = 161205168. Its totient is φ = 161205166.

The previous prime is 161205103. The next prime is 161205179. The reversal of 161205167 is 761502161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161205167 - 2⁶ = 161205103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161235167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80602583 + 80602584.

It is an arithmetic number, because the mean of its divisors is an integer number (80602584).

Almost surely, 2^161205167 is an apocalyptic number.

161205167 is a deficient number, since it is larger than the sum of its proper divisors (1).

161205167 is an equidigital number, since it uses as much as digits as its factorization.

161205167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 161205167 is about 12696.6596788289. The cubic root of 161205167 is about 544.2431679872.

The spelling of 161205167 in words is "one hundred sixty-one million, two hundred five thousand, one hundred sixty-seven".