161384249 has 4 divisors (see below), whose sum is σ = 173798436. Its totient is φ = 148970064.

The previous prime is 161384243. The next prime is 161384273. The reversal of 161384249 is 942483161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26708224 + 134676025 = 5168^2 + 11605^2 .

It is a cyclic number.

It is not a de Polignac number, because 161384249 - 2¹⁶ = 161318713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161384243) 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, 6207074 + ... + 6207099.

It is an arithmetic number, because the mean of its divisors is an integer number (43449609).

Almost surely, 2^161384249 is an apocalyptic number.

It is an amenable number.

161384249 is a deficient number, since it is larger than the sum of its proper divisors (12414187).

161384249 is a wasteful number, since it uses less digits than its factorization.

161384249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12414186.

The product of its digits is 41472, while the sum is 38.

The square root of 161384249 is about 12703.7100486433. The cubic root of 161384249 is about 544.4446257284. Note that the first 3 decimals are identical.

The spelling of 161384249 in words is "one hundred sixty-one million, three hundred eighty-four thousand, two hundred forty-nine".