161622830 has 24 divisors (see below), whose sum is σ = 295999272. Its totient is φ = 63539696.

The previous prime is 161622823. The next prime is 161622847. The reversal of 161622830 is 38226161.

161622830 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161622830² = 52243878354417800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161622793 and 161622802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32489 + ... + 37131.

It is an arithmetic number, because the mean of its divisors is an integer number (12333303).

Almost surely, 2^161622830 is an apocalyptic number.

161622830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161622830 is a deficient number, since it is larger than the sum of its proper divisors (134376442).

161622830 is an equidigital number, since it uses as much as digits as its factorization.

161622830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768 (or 4709 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 161622830 is about 12713.0967903182. The cubic root of 161622830 is about 544.7127852861.

Adding to 161622830 its reverse (38226161), we get a palindrome (199848991).

The spelling of 161622830 in words is "one hundred sixty-one million, six hundred twenty-two thousand, eight hundred thirty".