161335163 has 4 divisors (see below), whose sum is σ = 176002008. Its totient is φ = 146668320.

The previous prime is 161335157. The next prime is 161335169. The reversal of 161335163 is 361533161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361533161 = 11 ⋅32866651.

It is an interprime number because it is at equal distance from previous prime (161335157) and next prime (161335169).

It is a cyclic number.

It is not a de Polignac number, because 161335163 - 2⁴ = 161335147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161335169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7333406 + ... + 7333427.

It is an arithmetic number, because the mean of its divisors is an integer number (44000502).

Almost surely, 2^161335163 is an apocalyptic number.

161335163 is a deficient number, since it is larger than the sum of its proper divisors (14666845).

161335163 is a wasteful number, since it uses less digits than its factorization.

161335163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14666844.

The product of its digits is 4860, while the sum is 29.

The square root of 161335163 is about 12701.7779464136. Note that the first 3 decimals coincide. The cubic root of 161335163 is about 544.3894214174.

The spelling of 161335163 in words is "one hundred sixty-one million, three hundred thirty-five thousand, one hundred sixty-three".