161610423 has 8 divisors (see below), whose sum is σ = 232056048. Its totient is φ = 99452544.

The previous prime is 161610391. The next prime is 161610433. The reversal of 161610423 is 324016161.

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

It is not a de Polignac number, because 161610423 - 2⁵ = 161610391 is a prime.

It is a super-2 number, since 2×161610423² = 52235857644477858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161610393 and 161610402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161610433) 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 7 ways as a sum of consecutive naturals, for example, 2071890 + ... + 2071967.

It is an arithmetic number, because the mean of its divisors is an integer number (29007006).

Almost surely, 2^161610423 is an apocalyptic number.

161610423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161610423 is a deficient number, since it is larger than the sum of its proper divisors (70445625).

161610423 is a wasteful number, since it uses less digits than its factorization.

161610423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143873.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161610423 is about 12712.6088195932. The cubic root of 161610423 is about 544.6988466107.

Adding to 161610423 its reverse (324016161), we get a palindrome (485626584).

The spelling of 161610423 in words is "one hundred sixty-one million, six hundred ten thousand, four hundred twenty-three".