161507167 has 4 divisors (see below), whose sum is σ = 162058680. Its totient is φ = 160955656.

The previous prime is 161507141. The next prime is 161507197. The reversal of 161507167 is 761705161.

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

It is a cyclic number.

It is not a de Polignac number, because 161507167 - 2⁷ = 161507039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161507197) 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, 275317 + ... + 275902.

It is an arithmetic number, because the mean of its divisors is an integer number (40514670).

Almost surely, 2^161507167 is an apocalyptic number.

161507167 is a deficient number, since it is larger than the sum of its proper divisors (551513).

161507167 is an equidigital number, since it uses as much as digits as its factorization.

161507167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551512.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 161507167 is about 12708.5470058540. The cubic root of 161507167 is about 544.5828157144.

The spelling of 161507167 in words is "one hundred sixty-one million, five hundred seven thousand, one hundred sixty-seven".