161387 has 2 divisors, whose sum is σ = 161388. Its totient is φ = 161386.

The previous prime is 161377. The next prime is 161407. The reversal of 161387 is 783161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161387 - 2⁶ = 161323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80693 + 80694.

It is an arithmetic number, because the mean of its divisors is an integer number (80694).

2¹⁶¹³⁸⁷ is an apocalyptic number.

161387 is a deficient number, since it is larger than the sum of its proper divisors (1).

161387 is an equidigital number, since it uses as much as digits as its factorization.

161387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 161387 is about 401.7300088368. The cubic root of 161387 is about 54.4447719295. Note that the first 3 decimals are identical.

The spelling of 161387 in words is "one hundred sixty-one thousand, three hundred eighty-seven".