161576869 has 8 divisors (see below), whose sum is σ = 164913120. Its totient is φ = 158260656.

The previous prime is 161576851. The next prime is 161576873. The reversal of 161576869 is 968675161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161576869 - 2¹⁵ = 161544101 is a prime.

It is a super-2 number, since 2×161576869² = 52214169191686322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161576809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11859 + ... + 21535.

It is an arithmetic number, because the mean of its divisors is an integer number (20614140).

Almost surely, 2^161576869 is an apocalyptic number.

It is an amenable number.

161576869 is a deficient number, since it is larger than the sum of its proper divisors (3336251).

161576869 is an equidigital number, since it uses as much as digits as its factorization.

161576869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10019.

The product of its digits is 544320, while the sum is 49.

The square root of 161576869 is about 12711.2890377019. The cubic root of 161576869 is about 544.6611467112.

The spelling of 161576869 in words is "one hundred sixty-one million, five hundred seventy-six thousand, eight hundred sixty-nine".