161834927 has 4 divisors (see below), whose sum is σ = 161891856. Its totient is φ = 161778000.

The previous prime is 161834903. The next prime is 161834947. The reversal of 161834927 is 729438161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 729438161 = 1259 ⋅579379.

It is a cyclic number.

It is not a de Polignac number, because 161834927 - 2⁶ = 161834863 is a prime.

It is a super-3 number, since 3×161834927³ (a number of 26 digits) contains 333 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161834947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23963 + ... + 29964.

It is an arithmetic number, because the mean of its divisors is an integer number (40472964).

Almost surely, 2^161834927 is an apocalyptic number.

161834927 is a deficient number, since it is larger than the sum of its proper divisors (56929).

161834927 is an equidigital number, since it uses as much as digits as its factorization.

161834927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56928.

The product of its digits is 72576, while the sum is 41.

The square root of 161834927 is about 12721.4357287218. The cubic root of 161834927 is about 544.9509559436.

The spelling of 161834927 in words is "one hundred sixty-one million, eight hundred thirty-four thousand, nine hundred twenty-seven".