146381 has 2 divisors, whose sum is σ = 146382. Its totient is φ = 146380.

The previous prime is 146369. The next prime is 146383. The reversal of 146381 is 183641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75625 + 70756 = 275^2 + 266^2 .

It is a cyclic number.

It is not a de Polignac number, because 146381 - 2⁶ = 146317 is a prime.

It is a super-2 number, since 2×146381² = 42854794322, which contains 22 as substring.

Together with 146383, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146383) 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, 73190 + 73191.

It is an arithmetic number, because the mean of its divisors is an integer number (73191).

2¹⁴⁶³⁸¹ is an apocalyptic number.

It is an amenable number.

146381 is a deficient number, since it is larger than the sum of its proper divisors (1).

146381 is an equidigital number, since it uses as much as digits as its factorization.

146381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 146381 is about 382.5976999408. The cubic root of 146381 is about 52.7021383287.

The spelling of 146381 in words is "one hundred forty-six thousand, three hundred eighty-one".