161663035 has 8 divisors (see below), whose sum is σ = 194255136. Its totient is φ = 129157440.

The previous prime is 161663011. The next prime is 161663053. The reversal of 161663035 is 530366161.

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

It is not a de Polignac number, because 161663035 - 2⁵ = 161663003 is a prime.

It is a super-2 number, since 2×161663035² = 52269873770822450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161662988 and 161663006.

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 7 ways as a sum of consecutive naturals, for example, 17439 + ... + 25048.

It is an arithmetic number, because the mean of its divisors is an integer number (24281892).

Almost surely, 2^161663035 is an apocalyptic number.

161663035 is a deficient number, since it is larger than the sum of its proper divisors (32592101).

161663035 is an equidigital number, since it uses as much as digits as its factorization.

161663035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43253.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 161663035 is about 12714.6779353627. The cubic root of 161663035 is about 544.7579487939.

The spelling of 161663035 in words is "one hundred sixty-one million, six hundred sixty-three thousand, thirty-five".