161384385 has 32 divisors (see below), whose sum is σ = 275564160. Its totient is φ = 80414208.

The previous prime is 161384381. The next prime is 161384389. The reversal of 161384385 is 583483161.

161384385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161384381) and next prime (161384389).

It is not a de Polignac number, because 161384385 - 2² = 161384381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161384381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16927 + ... + 24683.

It is an arithmetic number, because the mean of its divisors is an integer number (8611380).

Almost surely, 2^161384385 is an apocalyptic number.

161384385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161384385 is a deficient number, since it is larger than the sum of its proper divisors (114179775).

161384385 is a wasteful number, since it uses less digits than its factorization.

161384385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857.

The product of its digits is 69120, while the sum is 39.

The square root of 161384385 is about 12703.7154014091. The cubic root of 161384385 is about 544.4447786645. Note that the first 3 decimals are identical.

The spelling of 161384385 in words is "one hundred sixty-one million, three hundred eighty-four thousand, three hundred eighty-five".