161092169 has 4 divisors (see below), whose sum is σ = 184105344. Its totient is φ = 138078996.

The previous prime is 161092159. The next prime is 161092177. The reversal of 161092169 is 961290161.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161092169 is a prime.

It is a super-2 number, since 2×161092169² = 51901373826249122, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161092159) 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 3 ways as a sum of consecutive naturals, for example, 11506577 + ... + 11506590.

It is an arithmetic number, because the mean of its divisors is an integer number (46026336).

Almost surely, 2^161092169 is an apocalyptic number.

It is an amenable number.

161092169 is a deficient number, since it is larger than the sum of its proper divisors (23013175).

161092169 is an equidigital number, since it uses as much as digits as its factorization.

161092169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23013174.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 161092169 is about 12692.2089881943. The cubic root of 161092169 is about 544.1159744538.

The spelling of 161092169 in words is "one hundred sixty-one million, ninety-two thousand, one hundred sixty-nine".