161448319 has 2 divisors, whose sum is σ = 161448320. Its totient is φ = 161448318.

The previous prime is 161448257. The next prime is 161448323. The reversal of 161448319 is 913844161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161448319 - 2¹³ = 161440127 is a prime.

It is a super-2 number, since 2×161448319² = 52131119415851522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161448389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80724159 + 80724160.

It is an arithmetic number, because the mean of its divisors is an integer number (80724160).

Almost surely, 2^161448319 is an apocalyptic number.

161448319 is a deficient number, since it is larger than the sum of its proper divisors (1).

161448319 is an equidigital number, since it uses as much as digits as its factorization.

161448319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 161448319 is about 12706.2315026919. The cubic root of 161448319 is about 544.5166648777.

The spelling of 161448319 in words is "one hundred sixty-one million, four hundred forty-eight thousand, three hundred nineteen".