161776167 has 16 divisors (see below), whose sum is σ = 246730752. Its totient is φ = 92363040.

The previous prime is 161776151. The next prime is 161776183. The reversal of 161776167 is 761677161.

It is an interprime number because it is at equal distance from previous prime (161776151) and next prime (161776183).

It is not a de Polignac number, because 161776167 - 2⁴ = 161776151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161776187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28273 + ... + 33509.

It is an arithmetic number, because the mean of its divisors is an integer number (15420672).

Almost surely, 2^161776167 is an apocalyptic number.

161776167 is a deficient number, since it is larger than the sum of its proper divisors (84954585).

161776167 is a wasteful number, since it uses less digits than its factorization.

161776167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6718.

The product of its digits is 74088, while the sum is 42.

The square root of 161776167 is about 12719.1260312963. The cubic root of 161776167 is about 544.8849932678.

The spelling of 161776167 in words is "one hundred sixty-one million, seven hundred seventy-six thousand, one hundred sixty-seven".