361873 has 2 divisors, whose sum is σ = 361874. Its totient is φ = 361872.

The previous prime is 361871. The next prime is 361877. The reversal of 361873 is 378163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345744 + 16129 = 588^2 + 127^2 .

It is an emirp because it is prime and its reverse (378163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 361873 - 2¹ = 361871 is a prime.

Together with 361871, it forms a pair of twin primes.

361873 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (361871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180936 + 180937.

It is an arithmetic number, because the mean of its divisors is an integer number (180937).

2³⁶¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

361873 is a deficient number, since it is larger than the sum of its proper divisors (1).

361873 is an equidigital number, since it uses as much as digits as its factorization.

361873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 361873 is about 601.5588084302. The cubic root of 361873 is about 71.2610242509.

Subtracting 361873 from its reverse (378163), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 361873 in words is "three hundred sixty-one thousand, eight hundred seventy-three".